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ADLER90 Adler, M. T. 1990. An artificial key to the genera of the Parmeliaceae. Mycotaxon 38:331-347. AHREN61 Ahrendt, L. W. A. 1961. Berberis and Mahonia. J. Linn. Soc. Lond. 57:1-410. AHTI61 Ahti, T. 1961. Taxonomic studies on reindeer lichens (Cladonia, subgenus Cladina). Ann. Bot. Soc. Zool. Bot. `Vanamo' 32:1-160. AHTI62 Ahti, T. 1962. On the taxonomy of Erysimum cheiranthoides L. Arch. Soc. Fauna Fl. Fenn. 16:22-35. AHTI66A Ahti, T. 1966. Parmelia olivacea and the allied non-isidiate and non-sorediate corticolous lichens in the Northern Hemisphere. Acta Bot. Fenn. 70:1-68. AHTI66B Ahti, T. 1966. Correlation of the chemical and morphological characters in Cladonia chlorophaea and allied lichens. Ann. Bot. Fenn. 3:380-390. AHTI78 Ahti, T. 1978. Nomenclatural and taxonomic remarks on European species of Cladonia. Ann. Bot. Fenn. 15:7-14. AHTI80 Ahti, T. 1980. Nomenclatural notes on Cladonia species. Lichenologist 5-133. AHTI87 Ahti, T., I. M. Brodo, & W. J. Noble. 1987. Contributions to the lichen flora of British Columbia, Canada. Mycotaxon 28:91-97. AIKEN90 Aiken, S. G., & S. J. Darbyshire. 1990. Fescue Grasses of Canada. 113 pp., 29 plates, 18 maps. Agric. Canada Publ. 1844/E. ALLEN80 Allen, B. H. 1980. Mosses new or noteworthy for Colorado. Bryologist 83:257. ALLEN85 Allen, G. A. 1985. The hybrid origin of Aster ascendens). Amer. J. Bot. 72:268-277. ALLIS08 Allison, E. M. 1908. Bibliography and history of Colorado botany. Univ. Colo. Studies 6:51-76. ALLRE83 Allred, K. W., & F. W. Gould. 1983. Systematics of the Bothriochloa saccharoides complex. Syst. Bot. 8:168-184. ALLRE84 Allred, K. W. 1984. Morphologic variation and classification of the North American Aristida purpurea complex (POA). Brittonia 36:382-395. ALSHE73 Al-Shebaz, I. A. 1973. Biosystematics of the genus Thelypodium. Contrib. Gray Herb. 204:1-148. ALSTR90 Alstrup, V., & D. L. Hawksworth. 1990. The lichenicolous fungi of Greenland. Medd. om Groenl., Biosci. 31:1-90. ANDER62A Anderson, R. A., & W. A. Weber. 1962. Two new species of Parmelia from western United States. Bryologist 65:234- 241. ANDER62B Anderson, R. A. 1962. The lichen flora of the Dakota sandstone in north-central Colorado. Bryologist 65:242-261 ANDER64A Anderson, R. A. 1964. The genus Lecidea in Rocky Mountain National Park. Unpublished Ph.D. Thesis, Univ. Colorado, Boulder. ANDER64B Anderson, L. 1964. Taxonomic notes on Chrysothamnus viscidiflorus complex. Madroño 17:222-229. ANDER65 Anderson, R. A. 1965. Additions to the lichen flora of North America, I. Bryologist 68:54-63. ANDER67 Anderson, R. A. 1967. Additions to the lichen flora of North America, II. Bryologist 70:339-343. ANDER74A Anderson, R. A., & M.-B. Carmer. 1974. Additions to the lichen flora of Colorado. Bryologist 77:216-223. ANDER74B Anderson, R. A. 1974. Additions to the lichen flora of North America, III. Bryologist 77:41-47. ANDER74C Anderson, R. A., & M.-B. Carmer. 1974. Rediscovery of Lecidea populina. Bryologist 77:82-84. ANDER76 Anderson, R. A. 1976. Lichens of western North America, Fasc. I. Exsiccati scheda. ANDER86 Anderson, L. C. 1986. An overview of the genus Chrysothamnus. pp. 29-45 in McArthur, E. D., & B. L. Welch. Proc. Sympos. biology of Artemisia and Chrysothamnus). 398 pp. ANDER90A Anderson, L., H. A. Crum, & W. R. Buck. 1990. List of the mosses of North America north of Mexico. Bryologist 93:448-499. ANDER90B Anderson, L. E. 1990. A checklist of Sphagnum in North America north of Mexico. Bryologist 93:300-301. ANDER94 Anderson, J. L., & J. M. Porter. 1994. Astragalus tortipes )Fabaceae), a new species from desert badlands in southwestern Colorado, and its phylogenetic relationships within Astragalus. Syst. Bot. 19:116-125. ANDER97 Anderson, J. L., J. L. Reveal, & R. C. Rollins. 1997. [Lesquerella vicina] (Brassicaceae), a new species from the Uncompahgre River Valley in Western Colorado. Novon 7:9-12. ANDRE35 Andrews, A. L. 1935. Bryaceae, in Grout, Moss Flora of North America 2:184-210. ANDRE49 Andrews, A. L. 1949. Taxonomic notes IX. Bryologist 52:78-83. Page 1 of 39 Catalog of the Colorado Flora: a Biodiversity Baseline Bibliography: Weber and Wittmann, electronic version 11-Mar-00

ARGUS57 Argus, G. W. 1957. The willows of Wyoming. Univ. Wyo. Publ. 21:1-63. ARGUS65 Argus, G. W. 1965. The taxonomy of Salix glauca complex in North America. Contrib. Gray Herb. 196:1-142. ARGUS73 Argus, G. W. 1973. The genus Salix in Alaska and the Yukon. Nat. Mus. Nat. Sci. Can. Publ. Bot. 2:1-279. ARGUS86 Argus, G. W. 1986. Studies of the Salix lucida and Salix reticulata complexes in North America. Can. J. Bot. 64:541- 552. ARGUS97 Argus, G. W. 1997. Notes on the Taxonomy and Distribution of California Salix. Madroño 44:115-136 ARNEL56 Arnell, S. 1956. Illustrated Moss Flora of Scandinavia. Hepatics. ARNOW80 Arnow, L., B. J. Albee, & A. N. Wykoff. 1980. Flora of the Central Wasatch Front. Edition 2. 663 pp. Univ. Utah. ARNOW81 Arnow, L. 1981. Poa secunda Presl versus P. sandbergii Vasey (POA). Syst. Bot. 6:412-421. ARNOW94 Arnow, L. 1994. Koeleria macrantha and K. pyramidata (POA); nomenclatural problems and biological distinctions. Syst. Bot. 19:6-20. ARP72 Arp, G. K. 1972. A revision of Pediocactus. Cact. Succ. J. U.S.A. 44:218-222. ARP84 Arp, G. K. 1984. Opuntia heacockiae (CAC), a new species from central Colorado. Sida 10:207-210. ARUP93 Arup, U. 1993. Caloplaca luteominia and C. bolanderi in western North America. Bryologist 96:463-470. ATKIN84 Atkins, R. L., M. E. Barkworth & D. R. Dewey. 1984. A taxonomic study of Leymus ambiguus and L. salinus (POA:TRIT). Syst. Bot. 9:279-294. ATLAS88 Atlas Florae Europaeae, Jalas & Suominen, eds. Vol. I, II. Cambridge Univ. Press ATWOO75 Atwood, N. D. 1975. A revision of the Phacelia crenulata complex for North America. Great Basin Nat. 35:127-190. AUSTI75A Austin, C. F. 1875. New Hepaticae. Bull. Torr. Bot. Club 6:17-21. AUSTI75B Austin, C. F. 1875. New mosses from Colorado. Bull. Torr. Bot. Club 6:45-46. AUSTI78 Austin, C. F. 1878. Hepaticae, in U. S. Geogr. Surv. (Wheeler) Rept. 6. AVERE73 Averett, J. E. 1973. Biosystematic study of Chamaesaracha (SOL). Rhodora 75:325-365. BABCO38 Babcock, E. B., & G. L. Stebbins, Jr. 1938. The American species of Crepis: their interrelationships and distribution as affected by polyploidy and apomixis. 199 pp., 34 fig. 12 tab. BACKL98 Backlund, A., & N. Pyck. 1998. Diervillaceae and Linnaeaceae, two new families of caprifolioids. Taxon 47:657-661. BAILE24 Bailey, L. H. 1924. Manual of cultivated plants, 1st ed. BAILE42 Bailey, L. H. 1942. Standard Cyclopaedia of Horticulture, 2nd ed. BAILE62 Bailey, V. L. 1962. Revision of the genus Ptelea. Brittonia 14:1-45. BAKER40 Baker, M. S. 1940. Studies in western violets, III. Madroño 5:218-231. BAKER49 Baker, M. S., & J. Clausen. 1949. Studies in western violets, VI. Madroño 10:110-128. BAKER53 Baker, M. S. 1953. Studies in western violets, VII. Madrono 12:8-18. BAKER57 Baker, M. S. 1957. Studies in western violets, VIII. The Nuttallianae continued. Brittonia 9:217-230. BAKER65 Baker, H. G. 1965. Charles Darwin and the perennial flax. Huntia 2: 141-161. BANKS66 Banks, D. J. 1966. Taxonomy of Paspalum setaceum. Sida 2:269-284. BARKL62 Barkley, T. M. 1962. A revision of Senecio aureus L. Trans. Kansas Acad. Sci. 65:318-408. BARKL68 Barkley, T. M. 1968. Manual of the flowering plants of Kansas. BARKL78 Barkley, T. M. 1978. Senecio, [in] North Amer. Flora (II)10:50-139. BARKW82 Barkworth, M. E., & J. Maze. 1982. The identity of Stipa columbiana Macoun and S. viridula var. minor Vasey (POA: Stipeae): a rebuttal. Taxon 31:290-299. BARKW83 Barkworth, M. E. 1983. Ptilagrostis in North America and its relationship to other Stipeae (POA). Syst. Bot. 8:395-419. BARKW85 Barkworth, M. E., & D. R. Dewey. 1985. Genomically based genera in the perennial Triticeae if North America: identification and membership. Amer. J. Bot. 72:767-776.

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BARKW93 Barkworth, M. North American Stipeae (Gramineae): Taxonomic changes and other comments. Phytologia 74:1-25. 1993 BARNE44 Barneby, R. C. 1944. A note on the distribution of some western dicotyledons. Lfl. W. Bot. 4:7-12. BARNE47 Barneby, R. C. 1947. A new monocephalous Parthenium. Lfl. W. Bot. 5:19-22. BARNE52 Barneby, R. C. 1952. A revision of the North American species of Oxytropis. Proc. Calif. Acad. Sci. 27:177-312. BARNE64 Barneby, R. C. 1964. Atlas of North American Astragalus. Mem. N. Y. Bot. Gard. 13:1-1188. BARNE77 Barneby, R. C. 1977. Dalea Imagines. Mem. N. Y. Bot. Gard. 27:1-891. BARNE86 Barneby, R. C., & S. Welsh. 1986. A new species of Astragalus [A. piscator] from southeastern Utah. Great Basin Nat. 45:551-552. BARNE89 Barneby, R. C. 1989. Intermountain Flora, vol. 3, Part B. Fabales. 279 pp. BARRE69 Barrell, J. 1969. Flora of the Gunnison Basin. BASSE66 Bassett, I. J. 1966. Taxonomy of North American Plantago Sect. Micropsyllium. Can. J. Bot. 44:467-479. BASSE78 Bassett, I. J., & C. W. Crompton. 1978. The genus Suaeda (CHN) in Canada. Can. J. Bot. 56:581-591. BATES18 Bates, J. M. 1918. A new Kochia. Amer. Bot. 24:51-52. BAUM67 Baum, B. R. 1967. Kalm's specimens of North American grasses. Can. J. Bot. 45:1845-1852. BAUM78 Baum, B. R. 1978. The genus Tamarix. 209 pp. Israel Acad. Sci. & Hum. BAYER87 Bayer, R. J., & G. L. Stebbins. 1987. Chromosome numbers, patterns of distribution, and apomixis in Antennaria. Syst. Bot. 12:305-319. BAYER88A Bayer, R. J. 1988. Typification of western North American Antennaria Gaertner; sexual species of Sections Alpinae, Dioicae, and Plantaginifoliae. Taxon 37:292-298. BAYER88B Bayer, R. J. 1988. Patterns of isozyme variation in North American Antennaria (Asteraceae: Inuleae). I. Sexual species of sect. Dioicae. Syst. Bot. 13:525-537. BAYER89A Bayer, R. J. 1989. A taxonomic revision of the Antennaria rosea polyploid complex. Brittonia 41:53-60. BAYER89B Bayer, R. J. 1989. Nomenclatural rearrangements in Antennaria neodioica and A. howellii. Brittonia 41:396-398. BAYER89C Bayer, R. J. 1989. A systematic and phytogeographic study of Antennaria aromatica and A. densifolia (Asteraceae: Inuleae) in the western North American cordillera. Madroño 36:248-259. BAYER93 Bayer, R. J., & G. L. Stebbins. 1004. A synopsis with keys for the genus [Antennaria] (Asteraceae: Inuleae: Gnaphaliinae of North America. Can. J. Bot. 71:1589-1604. BEAL56 Beal, E. O. 1956. Taxonomic revision of Nuphar. J. Elisha Mitchell Soc. 72:317-346. BEAMA57 Beaman, J. H. 1957. Systematics and evolution of Townsendia. Contrib. Gray Herb. 183:1-151. BEETL55 Beetle, A. A. 1955. The four subfamilies of the Gramineae. Bull. Torr. Bot. Club 82:196-197. BEETL60 Beetle, A. A. 1960. A study of sagebrush. Univ. Wyo. Exp. Sta. Bull. 368:1-83. BEETL65 Beetle, A. A. 1965. A third subspecies in the Artemisia tridentata complex. Rhodora 67:405-406. BEHNK97 Behnke, H.-Dietmar. 1997. Sarcobataceae, a new family of Caryophyllalea. Taxon 46:495-507. BENHA92 Benham, D. M., & M. D. Windham. 1992. Generic affinities of the star-scaled cloak ferns. Amer. Fern J. 82:47-58. BENSO40 Benson, L. 1940. The North American subdivisions of Ranunculus. Amer. J. Bot. 27:799-807. BENSO43 Benson, L. 1943. Review of status of southwestern desert trees and shrubs. Amer. J. Bot. 30:230-240;630-632. BENSO48 Benson, L. 1948. A treatise on the North American Ranunculi. Amer. Midl. Nat. 40:1-261. BENSO61 Benson, L. 1961-1962. A revision and amplification of Pediocactus. Cact. Succ. J. U.S.A. 33:49-54; 34:17-19; 57-61; 163-168. BENSO69 Benson, L. 1969. The cacti of Arizona. BENSO82 Benson, L. 1982. The cacti of the United States and Canada. BETAN84 Betancourt, J. L., et al. 1984. Pre-Columbian age for North AmericanCorispermum L. (Chenopodiaceae) confirmed by accelerator radiocarbon dating. Nature 311:653-655.

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BETAN87 Betancourt, J. L. 1987. Paleoecology of pinyon-juniper woodlands; summary. Proc. Pinyon-Juniper Conference. Forest Serv. General Tech. BRep. INT-215:129-139. BIDDU44 Biddulph, S. F. 1944. A revision of the genus Gaillardia. Wash. State College Res. Stud. 12:195-256. BIERN74 Bierner, M. W. 1974. A systematic study of Dugaldia. Brittonia 26:385-392. BIERN94 Bierner, M. W. 1994. Submersion of Dugaldia and Plummera in Hymenoxys. Sida 16:1-8. BJORK60 Björkman, S. O. 1960. Studies in Agrostis and related genera. Symb. Bot. Ups. 17:1-112. BJORK67 Björkqvist, I. 1967. Studies in Alisma, II. Chromosome studies, crossing experiments and taxonomy. Opera Bot. 17:1- 128. BLOM96 Blom, H. H. 1996. A revision of the Schistidium apocarpum complex in Norway and Sweden. Bryophytorum Bibliotheca 49:1-333. BOCHE52 Böcher, T. W. 1952. A study of the circumpolar Carex heleonastes-amblyorhyncha complex. Acta Arct. 5:1-32. BOCHE54 Böcher, T. 1954. Experimental taxonomic studies in the Arabis holboellii complex. Sv. Bot. Tidskr.48:31-44. BOGIN55 Bogin, C. 1955. Revision of the genus Sagittaria. Mem. N. Y. Bot. Gard. 9:179-233. BOIVI44 Boivin, B. 1944. American Thalictra and their Old World allies. Rhodora 46:337-377; 391-445; 453-487. BOIVI56A Boivin, B. 1956. Notulae taxonomicae II. Glaux maritima L. Bull. Soc. Roy. Bot. Belg. 88:9. BOIVI56B Boivin, B. 1956. Stellaria sectio Umbellatae Schischkin. Sv. Bot. Tidskr. 50:113-114. BOIVI60 Boivin, B., & D. Löve. 1960. Poa agassizensis, a new prairie bluegrass. Nat. Canad. 87:173-180. BOLLE33 Bolle, F. 1933. Eine Übersicht über die Gattung Geum L. Feddes Repert. Sp. Nov. 72:1-119. BOTSC69 Botschantsev, V. P. 1969. [The genus Salsola]. Bot. Inst. Akad. Nauk Publ. 094. BOTSC74 Botschantsev, V. P. 1974. A synopsis of Salsola (CHN) from south and southwest Africa. Kew Bull. 29:[597, 614]. BOWDE67 Bowden, W. M. 1967. Taxonomy of intergeneric hybrids of the tribe Triticeae in North America. Can. J. Bot. 45:711- 724. BOWER69A Bowers, M. 1969. A cytotaxonomic study of the genus Mnium in Colorado. Rev. Bry. Lich. 36:167-202. BOWER69B Bowers, M. C. 1969. Mnium saximontanum, a new moss. Bryologist 72:63-65. BRASS83 Brassard, G. R., & T. Henderson. 1983. The distribution of Mielichhoferia macrocarpa, a North American endemic moss. Bryologist 86:273-275. BRASS84 Brassard, G. R. 1984. The moss genus Timmia. 3. Sect. Timmia. Lindbergia 10:33-40. BREDK82 Bredkina, L. I. 1982. Lichenes montium Tian-Schan centralis pro URSS novi. Novit. Syst. Pl. Non Vasc. 19:128-130. BREME80A Bremer, B. 1980. Proposal to reject the names Grimmia alpicola Sw. ex Hedw. and Schistidium alpicola (Sw. ex Hedw.) Limpr. (GRM). Taxon 29:337-339. BREME80B Bremer, B. 1980. A taxonomic revision of Schistidium. I. Lindbergia 6:1-16. BRENC50 Brenckle, J. F. 1950. Notes on Polygonum, V. Phytologia 3:361-366. BREUS94 Breuss, O., & B. McCune. 1994. Additions to the pyrenolichen flora of North America. Bryol. 97:365-370. BREUS96A Breuss, O. 1996A. Revision der Flechtengattung [Placidiopsis] (Verrucariaceae. Oesterr. Z. Pilzk. 5:65-94. BREUS96B Breuss, O. 1966B. Ein verfeinertes Gliederungskonzept fuer [Catapyrenium] (lichenizierte Ascomyceten, Verrucariaceae) mit eimen Schluessel fuer die bisher bekannte Arten. Ann. naturhist. Mus. Wien 98B Suppl. 35- 50.1996. BREUS98 Breuss, O. 1998. On the taxonomy of "Catapyrenium" plumbeum (lichenized Ascomycetes, Verrucariaceae). Ann. Naturhist. Mus. Wien 100BL671-676. BRIZI64 Brizicky, G. K. 1964. A further note on Ceanothus herbaceus versus C. ovatus. J. Arnold Arb. 45:471-473. BRODO77 Brodo, I. M., & D. L. Hawksworth. 1977. Alectoria and allied genera in North America. Opera Bot. 42:1-164. BRODO84 Brodo, I. M. 1984. The North American species of the Lecanora subfusca group. Nova Hedwigia, Beih. 79:63-185. BRODO86 Brodo, I. M. 1986. A new lobate species of the lichen genus Lecanora. Mycotaxon 26:309-317. BRODO91 Brodo, I. M. 1991. Studies in the lichen genus Ochrolechia. 2. Corticolous species of North America. Can. J. Bot. 69:733-772. Page 4 of 39 Catalog of the Colorado Flora: a Biodiversity Baseline Bibliography: Weber and Wittmann, electronic version 11-Mar-00

BROOK81 Brooks, R. E. 1981. First records of Wolffia (LMN) for Colorado. Southwestern Nat. 26:321. BROWN64 Brown, D. F. M. 1964. Monographic study of the fern genus Woodsia. Nova Hedwigia 16:1-54. BROWN78 Brown, R. C. 1978. Biosystematics of Psilostrophe. II. Artificial hybridization and sytstematic treatment. Madroño 25:187-201. BRUMM65 Brummitt, R. K. 1965. New contributions in North American Calystegia. Ann. Mo. Bot. Gard. 52:214-216. BRUMM81 Brummitt, R. K. 1981. Further new names in the genus Calystegia. Kew Bull. 35:327-334. BRUSS87 Brusse, F. A. 1987. Schistoplaca (Lichenes, Biatoraceae), a new lichen genus. Mycotaxon 29:245-249. BUCK80 Buck, W. R. 1980. Animadversions on Pterigynandrum, with special commentary on Forsstroemia and Leptopterigynandrum. Bryologist 83:451-465. CALDE59 Calder, J. A., & D. B. O. Savile. 1959. Studies in Saxifragaceae, II. Saxifraga sect. Trachyphyllum in North America. Brittonia 11:228-249. CALDE60 Calder, J. A., & D. B. O. Savile. 1960. Studies in Saxifragaceae, III. Can. J. Bot. 38:409-435. CALDE68 Calder, J. A., & R. L. Taylor. 1968. Flora of the Queen Charlotte Islands, Part I. Systematics of the vascular plants. Can. Dept. Agr. Monogr. 4:1-659. CAMPB52 Campbell, G. R. 1952. The genus [Myosurus] L. (Ranunculaceae in North America. El Aliso 2:389-403. CANNE77 Canne, J. M. 1977. A revision of the genus Galinsoga. Rhodora 79:319-389. CANTI82 Cantino, P. D. 1982. A monograph of the genus Physostegia (LAM). Contrib. Gray Herb. 211:1-105. CARME75 Carmer, M.-B. 1975. Corticolous lichens of riparian deciduous trees in the Central Front Range of Colorado. Bryologist 78:44-56. CARR71 Carr, G. D. 1971. Taxonomy of Pedicularis parryi. Brittonia 23:280-292. CASTL67 Castle, Hempstead. 1967. A revision of the genus [Radula], Part II. Subgenus Acroradula, section 10. Complanatae. Rev. Bry. Lich. 35:1-94. 1967. CESKA73 Ceska, A., & M. A. M. Bell. 1973. Utricularia (LNT) in the Pacific Northwest. Madroño 22:74-84. CESKA86 Ceska, A., & O. Ceska. 1986. Notes on Myriophyllum (HAL) in the Far East: the identity of Myriophyllum sibiricum Komarov. Taxon 35:95-100. CHAMB57 Chambers, K. L. 1957. Taxonomic notes on some Compositae of the western United States. Contrib. Dudley Herb. 5:57-68. CHEN94 Chen, C. J., M. G. Mendenhall, & B. L. Turner. 1994. Taxonomy of Thermopsis (Fabaceae) in North America. Ann. Mo. Bot. Gard. 81:714-742. CHINN91 Chinnappa, C. C., & J. K. Morton. 1001. Studies on the Stellaria longipes complex (Caryophyllaceae) - Taxonomy. Rhodora 93:31-38. CHINN92 Chinnapa, C. C., D. J. Gifford, & J. Ramamoorthy. 1992. Studies on the Stellaria longipes complex (Caryophyllaceae): relationships among the species, based on seed protein profiles. Bot. J. Linn. Soc. 110:303-311. CHOLE84 Cholewa, A. F., & D. M. Henderson. 1984. Biosystematics of Sisyrinchium Sect. Bermudiana (IRI) of the Rocky Mountains. Brittonia 36:342-363. CHU91 Chu, G. L., H. C. Stutz, & S. C. Sanderson. 1991. Morphology and taxonomic position of Suckleya suckleyana (CHN). Amer. J. Bot. 78:53-68. CHUAN69 Chuang, T., & L. Constance. 1969. Taxonomic study of Perideridia. Univ. Calif. Publ. Bot. 55:1-74. CHUAN92 Chuang, T. I., & L. R. Heckard. 1992. A taxonomic revision of [Orthocarpus] (SCR-Tribe Pediculareae). Syst. Bot. 17:560-582. CHURC49 Church, G. L. 1949. Cytotaxonomic study of Glyceria and Puccinellia. Amer. J. Bot. 36:155-166. CHURC87 Churchill, S. 1987. Systematics and biogeography of Jaffueliobryum (Grimmiaceae). Mem. N. Y. Bot. Gard. 45:691- 708. CLARK75 Clark, C. 1975. Ecogeographic races of Lesquerella engelmannii (BRA): distribution, chromosome number and taxonomy. Brittonia 27:263-278. CLAUS41 Clausen, R. T. 1941. On the use of the terms "subspecies" and "variety." Rhodora 43:157-167 CLAUS43 Clausen, R. T., & C. H. Uhl. 1943. Revision of Sedum cockerellii and related species. Brittonia 5:33-46.

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CLAUS48 Clausen, R. T. 1948. Reinterpretation of Sedum stenopetalum and S. lanceolatum. Cact. Succ. J. U.S.A. 20:105-146. CLAUS75 Clausen, R. T. 1975. Sedum of North America north of the Mexican Plateau. 742 pp. illus. Cornell. CLAUZ81 Clauzade, G., & C. Roux. 1981. Les Acarospora de l'Europe occidentale et de la region Mediterraneenne. Bull. Mus. Hist. Nat. Marseille 41:41-93. CLAUZ84 Clauzade, G., & C. Roux. 1984. Les genres Aspicilia Massal. et Bellemerea Hafellner et Roux. Bull. Soc. Bot. Centre- Ouest, n.s. 15:127-141. CLAYT68 Clayton, W. D. 1968. The correct name of the Common Reed. Taxon 17:168-169. CLAYT86 Clayton, W. D., & S. A. Renvoize. 1986. Genera Graminum: Grasses of the World. Kew Bull. Addit. Series XIII. 389 pp. COCKE04 Cockerell, T. D. A. 1904. The North American species of Hymenoxys. Bull. Torr. Bot. Club 31:461-509. pl. 20-23. COCKE15 Cockerell, T.D.A. 1915. Some plants from the vicinity of the Arapahoe Glacier. Torreya 15:202-205. 1915. COMPT98 Compton, J. A., A. Culham, & S. L. Jury. 1998. Reclassification of Actaea to include Cimicifuga and Souliea (Ranunculaceae): phylogeny inferred from morphology, nrDNA ITS< and cpDNA trnL=F sequence variation. Taxon 47:593-634. CONST38 Constance, L. 1938. A revision of the genus Douglasia Lindl. Amer. Midl. Nat. 19:249-259. CONST40 Constance, L. 1940. The genus Ellisia. Rhodora 42:33-39. CONST41 Constance, L. 1941. The genus Nemophila Nutt. Univ. Calif. Publ. Bot. 19:341-398. CONST42 Constance, L. 1942. The genus Hydrophyllum L. Amer. Midl. Nat. 27:710-731. CONST48 Constance, L., & R. H. Shan. 1948. The genus Osmorhiza. Univ. Calif. Publ. Bot. 23:111-156. COOK85 Cook, C. K., & K. Urmi-König. 1985. A revision of the genus Elodea. Aquatic Botany 21:111-156. COOPE91A Cooper, D. J. 1991. The habitats of three boreal fen mosses new to the Southern Rocky Mountains of Colorado. Bryologist 94:49-50. COOPE91B Cooper, D. J. 1991. Additions to the peatland flora of the Southern Rocky Mountains; habitat descriptions and water chemistry. Madroño 38:139-141. COPEL41 Copeland, H. F. 1941. Further studies on Monotropoideae. Madroño 6:97-119. COPPI83 Coppins, B. J. 1983. A taxonomic study of the lichen genus Micarea in Europe. Bull. Brit. Nus. Nat. Hist. (Bot.) 11(2):17-314. COPPI84 Coppins, B. J., & P. W. James. 1984. New or interesting British lichens, V. Lichenologist 16:241-264. COPPI87 Coppins, B. J., P. W. James, & D. L. Hawksworth. 1987. The generic names Placynthiella Elenkin, Saccomorpha Elenkin and Placynthiella Gyelnik. Lichenologist 19:93-95. CORE41 Core, E. L. 1941. The North American species of Paronychia. Amer. Midl. Nat. 26:369-397. CORRE50 Correll, D. S. 1950. Native orchids of North America. Chronica Botanica Co. CORRE70 Correll, D., & M. C. Johnston. 1970. Manual of the vascular plants of Texas. Texas Research Found. CORRE72 Correll, D. S., & H. B. Correll. 1972. Aquatic and wetland plants of southwestern United States. 2 vols. Stanford. COULT95 Coulter, J. M., & J. N. Rose. 1895. Musineon of Rafinesque. Bot. Gaz. 20:258-260. COX33 Cox, C. F. 1933. Alpine plant succession on James Peak, Colorado. Ecol. Monogr. 3:299-372. COX70 Cox, B. J. 1970. Monograph of the Lupinus ornatus complex. Unpubl. thesis, Univ. of Missouri. CRAWF74 Crawford, D. J. 1974. A morphological and chemical study of (Populus acuminata) Rydberg. Brittonia 26:74-89. CRAWF75 Crawford, D. J. 1975. Systematic relationships in the narrow-leaved species of Chenopodium of the western United States. Brittonia 27:279-288. CRITC57 Critchfield, W. B. 1957. Variation in Pinus contorta. Maria Moors Cabot Found. Bull. 3:1-106. CRITC66 Critchfield, W. B., & E. L. Little. 1966. Geographic distribution of pines of the world. USDA Misc. Publ. 991:1-97. CRONQ43 Cronquist, A. 1943. Revision of western North American species of Aster centering about Aster foliaceus Lindl. Amer. Midl. Nat. 29:429-468. CRONQ47 Cronquist, A. 1947. Revision of North American species of Erigeron. Brittonia 6:121-302.

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CRONQ55 Cronquist, A. 1955. Phylogeny and taxonomy of the Compositae. Amer. Midl. Nat. 53:478-511. CRONQ57 Cronquist, A., & D. D. Keck. 1957. Reconstitution of the genus Machaeranthera. Brittonia 9:231-239. CRONQ72 Cronquist, A., A. & N. Holmgren & J. L. Reveal. 1972-1989. Intermountain Flora, Vol. 1, 3B, 4, 6. N. Y. Bot. Garden. CRONQ84 Cronquist, A. et al. 1984. Intermountain Flora, vol. 4. CRONQ94 Cronquist, A. 1994. Intermountain Flora, Vol. 5, Asterales. 496 pp.N. Y. Botanical Garden CROSS65A Crosswhite, F. S. 1965. Revision of Penstemon, Sect. Penstemon, II. A western alliance in series Graciles. Amer. Midl. Nat. 74:429-442. CROSS65B Crosswhite, F. 1965. Concerning Penstemon unilateralis and P. secundiflorus. Southwestern Nat. 10:318. CROSS70 Crosswhite, F. S., & S. Kawano. 1970. Pennellianthus (SCR), a new genus of Japan and USSR. Amer. Midl. Nat. 83:358-367. CROW78 Crow, G. E. 1978. A taxonomic revision of Sagina in North America. Rhodora 80:1-91. CRUM64 Crum, H., W. C. Steere, & L. E. Anderson. 1964. New names for some North American mosses. Bryologist 67:162- 164. CRUM65 Crum, H., W. L. Steere & L. E. Anderson. 1965. A list of the mosses of North America. Bryologist 68:377-432. CRUM67 Crum, H. 1967. Studies in North American Bryaceae I-II. Bryologist 70:106-110. CRUM81 Crum, H., & L. E. Anderson. 1981. Mosses of Eastern North America. 2 vols. Columbia. CRUND63 Crundwell, A. C., & E. Nyholm. 1963. Notes on the genus Tortella, II. Tortella arctica. Bryologist 66:184-191.6 figs. CRUND70 Crundwell, A. 1970. Notes on the nomenclature of British Mosses, I. Trans. Brit. Bryol. Soc. 6:133-138. CULB63 Culberson, W. L. 1963. A summary of the lichen genus Haematomma in North America. Bryologist 66:224-236. CULBE66 Culberson, W. L., & M. E. Hale. 1966. The range of Normandina pulchella in North America. Bryologist 69:365-367. CULBE68 Culberson, W. L., & C. F. Culberson. 1968. The lichen genera Cetrelia and Platismatia. Contrib. U. S. Nat. Herb. 34:449-558. CULBE69 Culberson, W. L. 1969. The chemistry and systematics of some species of the Cladonia cariosa group in North America. Bryologist 72:377-386. CUTLE39 Cutler, H. C. 1939. Monograph of the North American species of the genus Ephedra. Ann. Mo. Bot. Gard. 26:378- 427. pl. 27, 28. DAMSH69 Damsholt, K., K. Holmen & E. Warncke. 1969. A List of bryophytes of Denmark. Bot. Tidskr. 65:163-183. DAMSH77 Damsholt, K., & J. Vana. 1977 [1978]. The genus Jungermannia L. emend. Dum. in Greenland. Lindbergia 4:1-26. DAMSH78 Damsholt, K., & J. Vana. 1978. Jungermannia in Greenland. Lindbergia 4:1-26. DANIE11 Daniels, F. P. 1911. Flora of Boulder, Colorado, and vicinity. Univ. Missouri Stud. 2(2):i-xiii, 1-311. DARLI34 Darlington, J. 1934. A monograph of the genus Mentzelia. Ann. Mo. Bot. Gard. 21:103-226. DAVID50 Davidson, J. F. 1950. The genus Polemonium (Tournefort) L. Univ. Calif. Publ. Bot. 23:209-282. 24 figs, 10 maps. DAY80 Day, A. 1980. Nomenclatural changes in Ipomopsis congesta (PLM). Madroño 27:111-112. DECRA88 Decraene, L. R., & J. R. Aheroyd. 1988. Generic limits in Polygonum and related genera (PLG) on the basis of floral characters. J. Linn. Soc., Bot. 98:321-371. DEGEL54 Degelius, G. 1954. Collema in Europe. Symb. Bot. Ups. 13:1-499. DEGEL74 Degelius, G. 1974. The lichen genus Collema with special reference to the extra-European species. Symb. Bot. Ups. 22:(2)1-215. DELGA73 Delgadillo, C. 1973. A new species, nomenclatural changes, and generic limits in Aloina, Aloinella, and Crossidium (Musci). Bryologist 76:271-277. DELGA75 Delgadillo, C. 1975. Revision of Aloina, Aloinella, and Crossidium. Bryologist 78:245-303. DELIS63 Delisle, D. G. 1963. Taxonomy and distribution of the genus Cenchrus. Iowa State J. Sci. 37:259-351. DEMPS59 Dempster, L. T. 1959. A re-evaluation of Galium multiflorum and related taxa. Brittonia 11:105-122. DEMPS76 Dempster, L. T. 1976. Galium mexicanum of Central America and western North America. Madroño 23:378-386.

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DETLI39 Detling, L. 1939. A revision of the North American species of Descurainia. Amer. Midl. Nat. 22:481-520. DETLI51 Detling, L. E. 1951. The cespitose lupines of western North America. Amer. Midl. Nat. 45:474-499. 1951. DEWEY83A Dewey, D. R. 1983. New nomenclatural combinations in the North American perennial Triticeae (POA). Brittonia 35:30-36. DEWEY83B Dewey, D. R. 1983. Historical and current taxonomic perspectives of Agropyron, Elymus, and related genera. Crop Science 23:637-642. DIBBE80 Dibben, M. J. 1980. The chemosystematics of the lichen genus Pertusaria in North America north of Mexico. Milwaukee Publ. Mus. Publ. Biol. Geol. 5:1-162. DIETR76 Dietrich, W., & P. H. Raven. 1976. An earlier name for Oenothera strigosa. Ann. Mo. Bot. Gard. 62:382-383. DIETR88 Dietrich, E., & W. L. Wagner. 1988. Systematics of Oenothera section Oenothera subsection Raimannia and subsection Nutantigemma (Onagraceae). Syst. Bot. Monogr. 24:1-91. DIETR97 Dietrich, W., W.L. Wagner, & P. Raven. 1997. Systematics of Oenothera Section Oenothera subsection Oenothera (Onagraceae). Syst. Bot. Monogr. 50:1-234. DIRIG, R. Dirig, R. 1990. Distributional and ecological notes on Hypocenomyce scalaris in eastern North America. Mycotaxon 37:441-462. DORN75 Dorn, R. D. 1975. A systematic study of Salix Sect. Cordatae. Can. J. Bot. 53:1491-1522. DORN77 Dorn, R. D. 1977. Willows of the Rocky Mountain states. Rhodora 79:390-429. DORN78 Dorn, R. D. 1978. A new species of Draba [D. juniperina]. Madroño 25:101-103. DORN82 Dorn, R. D. 1982. A new species of Penstemon (SCR) from Wyoming [P. gibbensii]. Brittonia 34:334-335. DORN88A Dorn, R. D. 1988A. Nomenclature of Lomatium nuttallii, L. kingii, and L. megarrhizum (API). Madroño 35:70-71. DORN88B Dorn, R. D. 1988. Chenopodium simplex, an older name for C. gigantospermum (Chenopodiaceae). Madroño 35:162. DORN88C Dorn, R. D. 1988. Vascular plants of Wyoming. 340 pp. Mountain West Publishing, Cheyenne. DORN90 Dorn, R. D. A new variety of Penstemon fremontii (SCR) from Colorado. Madroño 37:195-199. DOSTA82 Dostal, J. 1982. Szsnan cevatnych rostlin Kveteny ceskoslovenske [catalog of the Czech flora]. p. 38 [Cerastium]. DOUGL86 Douglas, G. W. 1986. Nomenclatural changes in the Asteraceae of British Columbia. II. Astereae, Eupatoriae, Inuleae, Lactuceae, and Heliantheae. Can. J. Bot. 64:2726-2727. DRAPA60 Drapalik, D. J., & R. H. Mohlenbrock. 1960. A study of Eleocharis ser. Ovatae. Amer. Midl. Nat. 64:339-341. DUDLE64 Dudley, T. R. 1964. Alyssum introduced in North America. J. Arnold Arb. 70:298-300. DUGLE66 Dugle, J. R. 1966. A taxonomic study of western Canadian species in the genus Betula. Can. J. Bot. 44:929-1007. DUKE61 Duke, J. A. 1961. Preliminary revision of the genus Drymaria. Ann. Mo. Bot. Gard. 48:173-268. DUNN59 Dunn, D. B. 1959. Lupinus pusillus and its relationship. Amer. Midl. Nat. 62:500-510. DUNN70 Dunn, D. B., & J. M. Gillett. 1966. The lupines of Canada and Alaska. Can. Dept. Agr. Monogr. 2. ECKEL98 Eckel, P. M. 1998. Re-evaluation of Tortella (Musci, Pottiaceae) in conterminus U.S.A. and Canada with a treatment of the European species Tortella nitida. Bull. Buffalo Soc, Nat. Sci. 36:117-191. ECKEN77 Eckenwalder, J. E. 1977. North American Populus sect. Abaso and Aigeiros. J. Arnold Arb. 58:193-208. EDMON86 Edmonds, J. M. 1986. Biosystematics of Solanum sarrachoides Sendt. and S. physalifolium Rusby. J. Linn. Soc., Bot. 92:1-38. EGAN71A Egan, R. S. 1971. A floristic study of alpine lichens from Colorado and New Mexico. Unpublished Ph.D. Thesis, Univ. Colorado. EGAN72 Egan, R. S. 1972. Catalog of the lichens of New Mexico. Bryologist 75:7-35. EGAN87 Egan R. S. 1987. A fifth checklist of the lichen-forming, lichenicolous and allied fungi of the continental United States and Canada. Bryologist 90:77-173. EGAN90 Egan, R. S. 1990. Changes to the "Fifth Checklist of the lichen-forming lichenicolous and allied fungi of the Continental United States and Canada." Edition II. Bryologist 93:211-219. EGAN92 Egan, R. S. 1991 [Jan. 1992]. Changes in the "Fifth Checklist of the lichen-forming lichenicolous and allied fungi of the Continental United States and Canada." Edition III. Bryologist 94:396-400.

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EGLER41 Egler, F. E. 1941. The orthography of "pensylvanicus." Rhodora 43:220-222. EITEN63 Eiten, G. 1963. Taxonomy and variation of Oxalis sect. Corniculatae I. Amer. Midl. Nat. 69:257-309. EKMAN96 Ekman, S. The corticolous and lignicolous species of Bacidia and Bacidina in North America. Opera Bot. 127:1-148. ELIAS88 Eliasson, U. H. 1988. Floral morphology and taxonomic relations among the genera of Amaranthaceae in the New World and the Hawaiian Islands. Bot. J. Linn. Soc. 96:235-283. ELISE80 Elisens, W. J., & J. G. Packer. 1980. A contribution to the taxonomy of the Oxytropis campestris complex in northwestern North America. Can. J. Bot. 58:1820-1831. ELIX87 Elix, J. A., & M. E. Hale. 1987. Canomaculina, Myelochroa, Parmelinella, Parmelinopsis and Parmotremopsis, five new genera in the Parmeliaceae (lichenized Ascomycotina). Mycotaxon 29:233-244. ELIX89 Elix, J. A., G. A. Jenkins, & H. T. Lumbsch. 1989. Chemical variation in the lichen Lecanora epibryon s. ampl. Mycotaxon 35:169-175. ELLIS64 Ellison, W. L. 1964. A systematic study of the genus Bahia. Rhodora 66:67-86;177-215;281-311. ELLIS71 Ellison, W. L. 1971. Taxonomy of Platyschkuhria (AST). Brittonia 23:269-279. ELVAN84 Elvander, Patrick E. 1984. The taxonomy of Saxifraga (Saxifragaceae) Section Boraphila Subsection Integrifoliae in Western North America. Syst. Bot. Monogr. 3:1-44. EMERY57 Emery, W. H. P. 1957. A cytotaxonomic study of Setaria macrostachys. Bull. Torr. Bot. Club 84:94-105. ENGST72 Engstrand, L., & M. Gustafsson. 1972. Drawings of Scandinavian plants, 81-82; Chenopodium L. Bot. Not. 125:283- 286. EPLIN25 Epling, C. C. 1925. Monograph of the genus Monardella. Ann. Mo. Bot. Gard. 12:1-106. EPLIN39 Epling, C. C., & W. S. Stewart. 1939. A revision of Hedeoma with a review of allied genera. Fedde Repert. Sp. Nov., Beih. 115:1-49. EPLIN42 Epling, C. 1942. The American species of Scutellaria. Univ. Calif. Publ. Bot. 20:1-146. ERDMA62 Erdman, J., W. A. Weber & J. M. Tucker. 1962. Quercus ajoensis in Colorado. Southwestern Nat. 7:269-270. ERDMA65 Erdman, K. S. 1965. Taxonomy of the genus Sphenopholis. Iowa State Coll. J. Sci. 39:289-336. ESSLI77 Esslinger, T. 1977. Chemosystematic revision of brown Parmeliae. J. Hattori Bot. Lab. 42:1-211. ESSLI78A Esslinger, T. 1978. A new status for brown Parmeliae. Mycotaxon 7:45-54. ESSLI78B Esslinger, T. 1978. Studies in Physciaceae II. The genus Phaeophyscia in North America. Mycotaxon 7:283-320. ESSLI79 Esslinger, T. 1979. Studies in the lichen family Physciaceae, V. Two species of Physcia new to North America. Mycotaxon 10:210-212. ESSLI80 Esslinger, T. L. 1980. Proposal to conserve Melanelia Essl. over Pleurosticta Petrak (Lichens). Taxon 29:692. ESSLI86 Esslinger, T. 1986. Studies in the lichen family Physciaceae. VII. The new genus Physciella. Mycologia 78:92-97. ESSLI89 Esslinger, T. L. 1989. Some Phaeophyscia combinations revisited (Lichenes). Taxon 38:264-265. ESSLI90 Esslinger, T. L. 1990. On the correct names for some species of Melanelia. Mycotaxon 37:401-402. ESSLI92 Esslinger, T. L. 1992. The brown Parmelia type specimens of A. N. Oxner. Lichenologist 24:13-20. ESSLI94 Esslinger, T. L. 1994. New species and new combinations in the lichen genus [Physconia] in North America. Mycotaxon 51:91-99. EVANS15 Evans, A. W. 1915. Preliminary list of Colorado Hepaticae. Bryologist 18:44-47. EVANS15B Evans, A. W. 1915. The genus Plagiochasma Bull. Torr. Bot. Club 42:259-308. EVERT84 Evert, E. F. 1984. A new species of Antennaria (AST) [A. aromatica] from Montana and Wyoming. Madroño 31:109- 112. EWAN42 Ewan, J. A. 1942. A new West American genus of Polemoniaceae. J. Wash. Acad. Sci. 32:138-141. EWAN45 Ewan, J. A. 1945. A synopsis of the North American species of Delphinium. Univ. Colo. Stud., ser. D, 2:55-244. EWAN51 Ewan, J. A. 1951. Delphinium in North America: supplementary notes. Bull. Torr. Bot. Club 78:376-381. EWAN81 Ewan, J. A. 1981. Bibliographic Dictionary of Rocky Mountain Naturalists, 1682-1932. Regnum Vegetabile 107. 153 pp.

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EYDE87 Eyde, R. H. 1987. The case for keeping Cornus in the broad Linnean sense. Syst. Bot. 12:505-518. FAIRB59 Fairbrothers, D. E. 1959. Morphological variation of Setaria faberi and S. viridis. Brittonia 11:44-48. FAUST72 Faust, W. Z. 1972. A biosystematic study of the Interiores species group of the genus Vernonia. Brittonia 24:363-378. FAY96 Fay, M. F., & M. W. Chase. 1996. Resurrection of Themidaceae for the Brodiaea alliance, and recircumscription of Alliaceae, Amaryllidaceae, and Agapanthoideae. Taxon 45:441-451. FEDDE, F. 1909. Vier neue Formen von Papaver nudicaule aus dem Pazifischen Gebiete. Fedde Repert. Sp. Nov. 7:255-257. FERN26 Fernald, M. L. 1926. Two summers of botanizing in Newfoundland. Rhodora 28:49-241. FERNA32 Fernald, M. L. 1932. The linear-leaved species of Potamogeton, section Axillares. Mem. Amer. Acad. Arts Sci. (2)17:1-183. FERNA35 Fernald, M. L. 1935. Critical plants of the upper Great Lakes region. Rhodora 37:197-228. FERNA38 Fernald, M. L. 1938. New species, varieties and transfers. Rhodora 40:331-358. FERNA50 Fernald, M. L. 1950. Gray's Manual of Botany, 8th ed. 1632 pp. American Book Co. FEUER01 Feuerer, Tassilo. 1991. Revision der europaeischer Arten der Flechtengattung Rhizocarpon mit nichtgelben Lager und vielzelligen Sporen. Bibl. Lich. 39:1-218. FIFE79 Fife, A. J. 1979. Taxonomic observations on three species of North American Funaria. Bryologist 82:204-214. FINK35 Fink, B. 1935. The Lichen Flora of the United States. 426 pp., 47 plates. Univ. Michigan Press. FLEAK71 Fleak, L. S., & D. B. Dunn. 1971. Nomenclature of the Lupinus sericeus complex. Trans. Mo. Acad. Sci. 5:87-88. FLOWE52 Flowers, S. 1952. Monograph of the genus Anacolia. Bull. Torr. Bot. Club 79:161-185. FLOWE56 Flowers, S. 1956. Dicranoweisia crispula and D. cirrhata. Bryologist 59:239-244. FLOWE65 Flowers, S. 1965. The 1964 Foray of the American Bryological Society in Colorado. Bryologist 68:246-250. FNA93 Flora of North America Editorial Committee. Flora of North America: Vol. 2. Pteridophytes and Gymnosperms. 3:1- 475. 1993 FOGEL77 Fogel, R. 1977. Additions to the hypogeous mycoflora of Colorado, II. Sclerogaster xerophilum (Basidiomycetes, Hymenogastrales). Mycologia 69:980-986. FRANC53 Franco, J. A. 1953. On nomenclature of Douglas Fir. Soc. Astoria Lim. Reg. Anjos 68:3-6. FRANK61 Frankton, C., & R. J. Moore. 1961. Cytotaxonomy and distribution of Cirsium undulatum and C. flodmanii. Can. J. Bot. 39:21-33. FRANS96 Fransen, S. 1996. A taxonomic revision of Neotropical Bartramia section Vaginella C. Muell. Lindbergia 20:147- 179.(1995). FREDE82 Frederiksen, S. 1982. Festuca brachyphylla, F. saximontana and related species in North America. Nordic J. Bot. 2:525-536. FREY63 Frey, E. 1963. Beiträge Lichinenflora der Schweiz II. Ber. schweiz. bot. Ges. 73:389-503. FROIL52 Froiland, S. G. 1952. The biological status of Betula andrewsii A. Nels. Evolution 6:268-282. FRYE37 Frye, T. C., & L. Clark. 1937-1947. Hepaticae of North America. 2 vols. Univ. Washington. FRYXE74 Fryxell, P. A. 1974. The North American Malvellas. Southwestern Nat. 19:97-103. FRYXE88 Fryxell, P. A. 1988. Malvaceae of Mexico. Syst. Bot. Monogr. 25:1-522. FULLE86 Fuller, T. C. 1986. Russian thistles east of the Sierra Nevada. Calif. Native Plant Soc., Bristlecone Chapter, Newsletter 5(3):4-5. FURLO79 Furlow, J. J. 1979. The systematics of the American species of Alnus (BET). Rhodora 81:1-121; 151-248. GAISE46 Gaiser, L. O. 1946. The genus Liatris. Rhodora 48:165-183, 216-263, 273-320, 331-412. GALLO75 Galloway, L. A. 1975. Systematics of North American desert species of Abronia and Tripterocalyx (NYC). Brittonia 27:328-347. GAMBI83 Gambill, W., & Jennings, W. 1983. Nolina rediscovered in Colorado, but which species? Green Thumb 40:226-228. GEISS89 Geissler, P., & H. Bischler (eds.). 1989. Index Hepaticarum. 11. Naiadea to Pycnoscenus. J. Cramer.

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GENTR74 Gentry, J. L. 1974. Studies in the genus Hackelia in western United States and Mexico. Southwestern Nat. 19:139- 146. GILLE57 Gillett, J. M. 1957. A revision of the North American species of Gentianella. Ann. Mo. Bot. Gard. 44:195-269. GILLE61 Gillett, G. W. 1961. An experimental study of variation in the Phacelia sericea complex. Amer. J. Bot. 48:1-7. GILLE69 Gillett, J. M. 1969. Taxonomy of Trifolium, II. Can. J. Bot. 47:93-113. GILLI71 Gillis, W. T. 1971. Systematics of poison ivy. Rhodora 73:73-237, 371-443, 465-540. GILLY41 Gilly, C. 1941. The status of Eleocharis parvula var. anachaeta (Torr.) Svenson. Amer. Midl. Nat. 26:65-68. GLAD76 Glad, J. B. 1976. Taxonomy of Mentzelia mollis. Madroño 23:283-292. GLEAS47 Gleason, H. L. 1947. The preservation of well-known binomials. Phytologia 2:201-212. [Apropos Parthenocissus vitacea] GOFFI95 Goffinet, B., & R. I. Hastings. 1995. Ywo new sorediate taxa of Peltigera. Lichenologist 27:43-58. GOODM95 Goodman, G. J., & C. A. Lawson. 1995. Retracing Major Stephen H. Long's 1820 expedition. 366 pp. Univ. Oklahoma Press. GOUGH75 Gough, L. P. 1975. Cryptogam distribution on Pseudotsuga menziesii and Abies lasiocarpa in the Front Range, Boulder County, Colorado. Bryologist 78:124-145. GOULD49 Gould, F. W. 1949. Nomenclatural changes in Arizona grasses. Madroño 10:94-95. GOULD64 Gould, F. W., & Z. J. Kapadia. 1964. Biosystematic studies in the Bouteloua curtipendula complex, II. Taxonomy. Brittonia 16:182-207. GOULD65 Gould, S. J., & D. C. Noyce. 1965. Authors of Plant Genera. International Plant Index 2:1-336. N. Y. Botanical Garden. GOULD67 Gould, F. W. 1967. The grass genus Andropogon in the United States. Brittonia 19:70-77. GOULD74 Gould, F. W. 1974. Nomenclatural changes in the Poaceae. Brittonia 26:59-60. GOULD75 Gould, F. W. 1975. The grasses of Texas. 651 pp. Texas A & M Univ. Press, College Station. GOWAN89 Gowan, S. P. 1989. The lichen genus Porpidia (Porpidiaceae) in North America. Bryologist 92:25-59. GOWAR87 Goward, T. 1987. Brodoa, a new lichen genus in the Parmeliaceae. Bryologist 89:219-223,1986 [1987. GOWAR88 Goward, T. 1988. Hypogymnia oceanica, a new lichen (Ascomycotina) from the Pacific Northwest of North America. Bryologist 91:229-232. [contains a key to all North American species] GRAHA79 Graham, S. A. 1979. The origin of Ammannia x coccinea Rottboell. Taxon 28:169-178. GRANT24 Grant, A. L. 1924. A monograph of the genus Mimulus. Ann. Mo. Bot. Gard. 11:99-388. GRANT43 Grant, E., & C. Epling. 1943. A study of Pycnanthemum (Labiatae). Univ. Calif. Publ. Bot. 20:195-240. GRANT56 Grant, V. 1956. Genetic and taxonomic studies in Gilia, VIII-X. Aliso 3:203-287. GRANT56 Grant, V. 1956. A synopsis of Ipomopsis. Aliso 3:351-362. GRANT86 Grant, V., & D. Wilken. 1986. Taxonomy of the Ipomopsis aggregata group (PLM). Bot. Gaz. 147:359-371. GRANT88 Grant, V., & D. H. Wilken. 1988. Racial variation in Ipomopsis tenuituba (PLM). Bot. Gaz. 149:443-449. GRANT89 Grant, Verne. 1989. Taxonomy of the tufted alpine and subalpine polemoniums (PLM). Bot. Gaz. 150:158-169. GRANT99 Grant, V., & A. Day. 1999. Transfer of some species from Gilia to Allophyllum and Tintinabulum, and the effects of the transfer on the generic definition of Gilia (PLM). Phytologia 84:368-382. 1998 [1999]. GRAYU87 Grayum, M. H. 1987. A summary of evidence and arguments supporting the removal of Acorus from the Araceae. Taxon 36:723-729. GREAT77 Great Plains Flora Association. 1977. Atlas of the Flora of the Great Plains. 600 pp., 2,217 maps. Iowa State Univ. Press. GREAT86 Great Plains Flora Association. 1986. Flora of the Great Plains. 1,392 pp. Univ. Press of Kansas. GREEN04A Greene, E. L. 1904. The genus Pneumonanthe. Lfl. Bot. Obs. Crit. 1:68-71. GREEN04B Greene, E. L. 1904. Certain Polygonaceous genera. Lfl. Bot. Obs. Crit. 1:17-50. GREEN05 Greene, E. L. 1905. A proposed new genus, Anotites. Lfl. Bot. Obs. Crit. 1:97-105.

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GREEN06 Greene, E. L. 1906. The genus Leiostemon. Lfl. Bot. Obs. Crit. 1:223. GREEN18 Greenman, J. M. 1918. Monograph of the North and Central American species of the genus Senecio, Part II. Ann. Mo. Bot. Gard. 5:1-103. GREGO41 Gregory, W. C. 1941. Phylogenetic and cytological studies in the Ranunculaceae Juss. Trans. Amer. Phil. Soc., n.s. 31:443-520. [justification for family status of Coptaceae] GRIFF98 Griffin, Dana, III. 1998. Axillary hairs in Bartramia section Strictidium. Evansia 15:81-83. GROLL66 Grolle, R. 1966. Die Typizierung von Jungermannia L. und J. lanceolata L. Taxon 15:186-190. GROLL81 Grolle, R., & P. Isoviita. 1981. Scapania nemorea vs. S. nemorosa: further comments. Ann. Bot. Fenn. 18:83-84. GROSS49 Grossheim, A. A. 1949. Opredelitel Rasteniy Kavkaza (Keys to the flora of Caucasus). 747 pp. Moscow GROUT16 Grout, A. J. 1916. Mosses of Colorado from Tolland and vicinity. Bryologist 19:1-8. GROUT28 Grout, A. J. 1928-1940. Moss Flora of North America. 3 vols. [with contributions from other authors]. N. Y. Bot. Garden. GRUMM63 Grummann, V. 1963. Catalogus Lichenum Germaniae: Ein systematisch-floristischer Katalog der Flechten Deutschlands. 208 pp. G. Fischer Verlag. GUEDE81 Guedes, M. 1981. No species names for strawberries ever published by A. N. Duchesne. Taxon 30:299. GUTER75 Guterman, W. 1975. Übersicht einiger ergänzter Sippen und geänderter Namen in den Markiersformularen zur Kartierung der Flora Mitteleuropas. Gött. Florist, Rundbr. 9:44-52. GYELN31 Gyelnik, V. 1931. Additamenta ad cognitionem Parmeliarum, II. Fedde Rep. Sp. Nov. 29:273-291. GYELN34 Gyelnik, V. 1934. Bemerkungen über V. Gyelnik, Lichenotheca. Rev. Bry. Lich. 7:48-52. GYELN38 Gyelnik, V. 1938. Fragmenta lichenologica, I. Lilloa 3:49-80. HABER72 Haber, E. 1972. Priority of the binomial Pyrola chlorantha. Rhodora 74:396-397. HABER74 Haber, E., & J. E. Cruise. 1974. Generic limits in the Pyroloideae (Ericaceae). Can. J. Bot. 52:877-883. HABER87 Haber, E. 1987. Variability, distribution and systematics of Pyrola picta s.l. (ERI) in western North America. Syst. Bot. 12:324-335. HADAC70 Hadaç, E., & J. Chrtek. 1970. Notes on the taxonomy of Cuscutaceae. Folia Geobot. Phytotax. 5:443-445. HAEME80 Hämet-Ahti, L. 1980. Juncus alpinoarticulatus, the legitimate name for Juncus alpinus. Ann. Bot. Fenn. 17:341-342. HAFEL84 Hafellner, J. 1984. Studien in Richtung einer natürlichen Gliederung der Sammelfamilien Lecanoraceae und Lecideaceae. Nova Hedwigia, Beih. 79:241-371. HAFEL91 Hafellner, J. 1991. Die Gattung [Aspicilia], ihre Ableitung . . . Acta Bot. Malacitana 16:133-140. [Discussion of ascocarp organization and evolutionary lines. . . . Lobothallia gen. nov. HAFEL93A Hafellner, J. 1993A. Acarospora und Pleopsidium, zwei lichenizierte Ascomycetengattungen (Lecanorales) mit zahlreichen Konvergenzen. Nova Hedwigia 56:281-305. HAFEL93B Hafellner, J. 1993B. Die Gattung Pyrrhospora in Europe. Herzogia 9:725-747. HAKUL54 Hakulinen, R. 1958. Die Flechtengattung Candelariella Mueller-Arg. Ann. Bot. Soc. "Vanamo" 27:1-127.1954. HAKUL58 Hakulinen, R. 1958. Some species of Candelariella from North America and Central Asia. Arch. Soc. "Vanamo" 13:53-55. HALE68 Hale, M. E. 1968. A synopsis of the lichen genus Pseudevernia. Bryologist 71:1-10. HALE70 Hale, M. E., & W. L. Culberson. 1970. A fourth checklist of the lichens of the United States and Canada. Bryologist 73:499-543. HALE74 Hale, M. E. 1974. Bulbothrix, Parmelina, Relicina and Xanthoparmelia, four new genera in the Parmeliaceae. Phytologia 28:479-490. HALE75 Hale, M. E. 1975. A revision of the lichen genus Hypotrachyna in tropical Anerica, Smithson. Contrib. Bot. 25:1-73. HALE76 Hale, M. E. 1976. Monograph of Parmelina. Smithsonian Contrib. Bot. 33:1-60. HALE84 Hale, M. E. 1984. Flavopunctelia, a new genus in the Parmeliaceae. Mycotaxon 20:681-682. HALE86A Hale, M. E. 1986. Arctoparmelia, a new genus in the Parmeliaceae. Mycotaxon 25:251-254. HALE86B Hale, M. E. 1986. Flavoparmelia, a new genus in the lichen family Parmeliaceae. Mycotaxon 25:603-605. Page 12 of 39 Catalog of the Colorado Flora: a Biodiversity Baseline Bibliography: Weber and Wittmann, electronic version 11-Mar-00

HALE88A Hale, M. E. 1988. A monograph of the lichen genus Parmelia Acharius sensu stricto (Ascomycotina: Parmeliaceae). Smithsonian Contrib. Bot. 66:1-54. HALE88B Hale. M. E. 1988. New combinations in the lichen genus Xanthoparmelia. Mycotaxon 33:401-406. HALE89 Hale, M. E. 1989. New species in the lichen genus Xanthoparmelia. Mycotaxon 34:541-564. HALE90A Hale, M. E., & A. Fletcher. 1990. Rimelia Hale & Fletcher, a new lichen genus (Ascomycotina: Parmeliaceae). Bryologist 93:23-29. HALE90B Hale, M. E. 1990. A synopsis of the lichen genus Xanthoparmelia (Vainio) Hale (Ascomycotina, Parmeliaceae). Smithsonian Contrib. Bot. 74:1-250. HALL23 Hall, H. M., & F. E. Clements. 1923. The phylogenetic method in taxonomy. The North American species of Artemisia, Chrysothamnus and Atriplex. Carnegie Inst. Wash. Publ. 326. HALL28 Hall, H. M. 1928. The genus Haplopappus. Carnegie Inst. Wash. Publ. 389. 1-391. HALL43 Hall, C. C. 1943. Observations on western Botrychiums. Amer. Fern J. 33:119-130. HALLE66 Halleck, D. K., & D. Wiens. 1966. Taxonomic status of Claytonia rosea. Ann. Mo. Bot. Gard. 53:205-212. HALSE81 Halse, R. R. 1981. Taxonomy of Phacelia Sect. Miltitzia (HYD). Madroño 28:121-132. HANDE38 Handel-Mazzetti, H. 1938. Die chinesische Arten der Gattung Ligularia. Bot. Jahrb. 69:95-142. HANSE87 Hansen, E. S., J. Poelt, & U. Söchting. 1987. Die Flechtengattung Caloplaca in Grönland. Medd. om Grönl., Bioscience 25:1-52. HARA82 Hara, H., A. O. Chater, & L.H.J. Williams. 1982. An enumeration of the flowering plants of Nepal, vol. 3. 226 pp. British Museum (Nat. Hist.) HARMS68A Harms, L. J. 1968. Cytotaxonomic studies in Eleocharis Subseries Palustres: Central United States taxa. Amer. J. Bot. 55:966-974. HARMS68B Harms, V. L. 1968. Nomenclatural changes and taxonomic notes on Heterotheca, including Chrysopsis, in Texas and adjacent states. Wrightia 4:8-19. HARMS74 Harms, V. L. Chromosome numbers in Heterotheca), including Chrysopsis (Compositae: Astereae), with phylogenetic interpretations. Brittonia 26:61-69. HARMS85 Harms, V. L. 1985. A reconsideration of the nomenclature and taxonomy of the Festuca altaica complex (POA) in North America. Madroño 32:1-10. HARRI54 Harrington, H. D. 1954. Manual of the Plants of Colorado. 666 pp. Sage Books. HARRI55 Harrington, H. D., & Y. Matsumura. 1955. The true aquatic vascular plants of Colorado. Colo. A & M College, Tech. Bull. 57.1-130. HARRI73 Harris, R. C. 1973. The corticolous pyrenolichens of the Great Lakes Region. Michigan Bot. 12:3-68. HARRI78 Harris, R. C., & W. R. Buck. 1987. Lichens of the Mackinac Straits region, II. Candelariella Muell. Arg. Michigan Bot. 17:155-161. HARRI80 Harris, R. C. 1980. New and noteworthy pyrenocarpous lichens from Louisiana and Florida. Bryologist 83:1-20. HARRI84A Harris, R. C. 1984. Sticta, An "easy" genus becomes more difficult. Evansia 1:7-8. HARRI84B Harris, R. C. 1984. Name changes for some common lichens and additions to the North American lichen flora. Evansia 1:23-24. HARRI85 Harris, J. G. 1985. A revision of the genus Braya (Cruciferae) in North America. Unpublished Ph.D. thesis, Univ. Alberta. HARTM69 Hartman, E. L. 1969. Ecology of copper moss in Colorado. Bryologist 72:56-59. HARTM85 Hartman, E. L., & M. L. Rottman. 1985. The alpine vascular flora of three cirque basins in the San Juan Mountains, Colorado. Madroño 32:253-272. HARTM88 Hartman, E. L., & M. L. Rottman. 1988. The vegetation and alpine vascular flora of the Sawatch Range, Colorado. Madroño 35:202-225. HARTM90 Hartman, R. L. 1990. A conspectus of Machaeranthera (Asteraceae: Astereae). Phytologia 68:439-465. HARTO70 Hartog, G. den, & F. van der Plas. 1970. A synopsis of the Lemnaceae. Blumea 18:355-368. HARVE54 Harvey, L. H. 1954. New entities in Eragrostis. Bull. Torr. Bot. Club 81:405-410.

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HAUFL91 Haufler, C. H., & M. D. Windham. 1991. New species of North American Cystopteris and Polypodium, with comments on their reticulate relationships. Amer. Fern J. 81:7-23. HAUKE60 Hauke, R. L. 1960. The smooth scouring rush and its complexities. Amer. Fern J. 50:185-193. HAWKS72 Hawksworth, F. G., & D. Wiens. 1972. Biology and classification of dwarf mistletoes. U. S. F. S. Agr. Handb. 401. HAWKS80 Hawksworth, D. L., P. W. James, & B. J. Coppins. 1980. Checklist of British lichen-forming, lichenicolous and allied fungi. Lichenologist 12:1-115. HAWKS81 Hawksworth, D. L. 1981. Lichenothelia, a new genus for the Microthelia aterrima group. Lichenologist 13:141-153. HAWKS82 Hawksworth, D. L. 1982. Changes to the British checklist arising from the abolition of later fungal starting points. Lichenologist 14:131-137. HAWKS85 Hawksworth, D. L. 1985. A redisposition of the species referred to the ascomycete genus Microthelia. Bull. Brit. Mus. (Nat. Hist.), Bot. ser. 14:43-181. HAYNE69 Haynes, R. R. 1969. Conopholis alpina Liebmann var mexicana (Gray ex Watson) Haynes, comb. nov. Sida 3:347.1969. HAYNE74 Haynes, R. R. 1974. A revision of North American Potamogeton subsection Pusilli (POT). Rhodora 76:564-649. HAYNE91 Haynes, R. R. 1971. A monograph of the genus [Conopholis] (Orobanchaceae). Sida 4:246-264. HECKA60 Heckard, L. R. 1960. Taxonomic studies in the Phacelia magellanica polyploid complex. Univ. Calif. Publ. Bot. 32:1- 126. HEDBE92 Hedberg, O. 1992. Taxonomic differentiation in Saxifraga hirculus L. (SAX), a circumpolar Arctic-Boreal species of Central Asiatic origin. Bot. J. Linn. Soc. 109:377-393. HEDEN89 Hedenäs, L. 1989. The genera Scorpidium and Hamatocaulis, gen. nov., in northern Europe. Lindbergia 15:8-36. HEDEN97 Hedenäs, Lars. A partial revision of Campylium. Bryologist 100:65-88. HEIL81 Heil, K., B. Armstrong & D. Schleser. 1981. A review of the genus Pediocactus. Cact. Succ. J. 53:17-39. HEISE45 Heiser, C. B. 1945. A revision of the genus [Schkuhria. Ann. Mo. Bot. Gard. 32:265-278. HEISE63 Heiser, C. B. 1963. Artificial intergeneric hybrids of Helianthus and Viguiera. Madroño 17:118-127. HEISE69 Heiser, C. B., et al. 1969. The North American sunflowers (Helianthus). Mem. Torr. Bot. Club 22(3):1-213. HENDE76 Henderson, D. M. 1976. A biosystematic study of Pacific Northwestern blue-eyed-grasses (Sisyrinchium, IRI). Brittonia 28:149-176. HENSS63A Henssen, A. 1963. The North American species of Massalongia and generic relationships. Can. J. Bot. 41:1331-1346. HENSS63B Henssen, A. 1963. The North American species of Placynthium. Can. J. Bot. 41:1687-1724. HENSS63C Henssen, A. 1963. Eine Revision der Flechtenfamilien Lichenaceae und Ephebaceae. Symb. Bot. Upsal. 18:1-123. HENSS76 Henssen, A. 1977. The genus Zahlbrucknerella. Lichenologist 9:17-46. HENSS84 Henssen, A. 1984. Placynthium arachnoideum, a new lichen from Patagonia, and notes on other species of the genus in the Southern Hemisphere. Lichenologist 16:265-271. HENSS86 Henssen, A. 1986. Edwardiella mirabilis, a holocarpous lichen from Marion Island. Lichenologist 18:51-56. HENSS87 Henssen, A. 1987. Lichenothelia, a genus of microfungi on rocks. Bibl. Lichenol. 25:257-293. HERMA40 Hermann, F. J. 1940. Cyperaceae of Nevada. Contrib. Flora Nevada 17:1-57. HERMA59 Hermann, F. J. 1959. New status for three western Carices. Lfl. W. Bot. 9:15-16. HERMA60 Hermann, F. J. 1960. Vetches of the United States--native, naturalized and cultivated. USDA Agric. Handbook 168. HERMA64 Hermann, F. J. 1964. The Juncus mertensianus complex in western North America. Lfl. W. Bot. 10:81-87. HERMA70 Hermann, F. J. 1970. Manual of Carices of the Rocky Mountains and Colorado Basin. U. S. F. S. Agr. Handb. 374. HERMA73 Hermann, S., C. Leuckert & J. Poelt. 1973. Flechtengruppe Lecanora radiosa. Willdenowia 7:9-30. HERMA75 Hermann, F. J. 1975. Manual of rushes of the Rocky Mountains and Colorado Basin. U. S. F. S. Gen. Tech. Rep. RM- 18. HERMA76 Hermann, F. J. 1976. Additions to the bryophyte flora of Colorado. Bryologist 79:215-221. HERMA77 Hermann, F. J., & W. A. Weber. 1977. Juncus triglumis in North America. Rhodora 79:160-162.

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HERMA80 Hermann, F. J. 1980. Distinctions between Anacolia menziesii (new to Colorado) and Bartramia stricta. Bryologist 83:253-254. HERMA87 Hermann, F. J. 1987. The bryophytes of Rocky Mountain National Park. Mem. N. Y. Bot. Gard. 45:219-231. HERTE69 Hertel, H. 1969. Die Flechtengattung Trapelia Choisy. Herzogia 1:111-130. HERTE70 Hertel, H. 1970. Beiträge zur Kenntnis der Flechtenfamilie Lecideaceae, III. Herzogia 2:37-62. HERTE71 Hertel, H. 1971. Beiträge zur Kenntnis der Flechtenfamilie Lecideaceae, IV. Herzogia 2:231-261. HERTE73 Hertel, H. 1973. Beiträge zur Kenntnis der Flechtenfamilien Lecideaceae, V. Herzogia 2:479-515. HERTE75 Hertel, H. 1975. Beiträge zur Kenntnis der Flechtenfamilie Lecideaceae, VI. Herzogia 3:365-406. HERTE77A Hertel, H. 1977. Gesteinsbewohnende Arten der Sammelgattung Lecidea aus Zentral-, Ost-, und Südasien. Eine Übersicht. Khumbu Himal 6:145-378. HERTE77B Hertel, H. 1977. Lecidea in der Arktis, I. Mitt. Bot. München 13:337-352. HERTE81 Hertel, H. 1981. Beiträge zur Kenntnis der Flechtenfamilie Lecideaceae, VIII. Herzogia 5:449-463. HERTE83A Hertel, H. 1983. Lecideaceae Exsiccati No. 99 (April). Trapeliopsis, genus nov. See also p. 143 in Schneider (1979). HERTE83B Hertel, H. 1983. Über einige aus Lecidea und Melanolecia auszuschliessende Arten. Mitt. Bot. München 19:441-447. HERTE85 Hertel, H., & G. Rambold. 1985. Lecidea Sect. Armeniaca: Lecideoide Arten der Flechtengattungen Lecanora und Tephromela. Bot. Jahrb. Stst. 107:469-501. HERTE85A Hertel, H. 1985. Lecideaceae Exsiccatae, Fasc. VIII (No. 141-160). HERTE85B Hertel, H., & G. Rambold. 1985. Lecidea Sect. Armeniacae: lecideoide Arten der Flechtengattungen Lecanora und Tephromela (Lecanorales). Bot. Jahrb. Syst. 1078:460-501. HERTE87 Hertel, H., & G. Rambold. 1987. Miriquidica genus novum Lecanoracearum (Ascomytetes lichenisati). Mitt. Bot. Staatssamml. München 23:377-392. HERTE90 Hertel, H., & G. Rambold. 1990. Zur Kenntnis der Familie Rimulariaceae (Lecanorales). Bibl. Lich. 38:145-189. HERTE95 Hertel, H. 1995. Schlussel fur die Gattung Lecidea in Europa. Bibl. Lich. 58:137-188. HERTE95C Hertel H., & G. Rambold. 1995. On the genus Adelolecia (lichenized Ascomycotina, Lecanorales). Bibl. Lich. 57:211- 230. HERTE97 Heetel, H. On the genus Lecidea in S. Chile and Argentina. Symb. Bot. Ups. 32:95-111. HESS70 Hess, L. W., & D. B. Dunn. 1970. Nomenclature of Lupinus argenteus and L. caudatus. Rhodora 72:110-114. HICKM84 Hickman, J. C. 1984. Nomenclatural changes in Persicaria, Polygonum, and Rumex (PLG). Madroño 31:249-252. HICKM93 Hickman, C. C. (ed). The Jepson Manual: Higher Plants of California. 1400 pp. Univ. Calif. Press. HIGGI71 Higgins, L. C. 1971. Revision of Cryptantha subg. Oreocarya. Brigham Young Univ. Sci. Bull. 13:1-63. HILL76 Hill, R. J. 1976. Mentzelia sinuata (Rydb.) R. J. Hill, comb. nov. and M. speciosa Osterh. (LOA), a species pair from the Rocky Mountain Front Range. Bull. Torr. Bot. Club 103:212-217. HINTE94 Hinteregger, E. 1994. Krustenflechten auf der Rhododendrum-Arten (R. ferrgineum und R. hirsutum) der Ostalpen unter besonderer Berücksichtigung einiger Arten der Gattung Biatora. Bibl. Lich. 55:1-346. HINTO69 Hinton, B. D. 1969. Parietaria hespera, a new species of the southwestern United States. Sida 3:293-297. HINTO76 Hinton, W. F. 1976. The systematics of Physalis pumila ssp. hispida. Syst. Bot. 1:188-193. HITCH33 Hitchcock, C.L. 1933. A taxonomic study of the genus Nama. Amer. J. Bot. 20:415-430;518-534. HITCH35 Hitchcock, A. S., & A. Chase. 1935. Manual of the grasses of the United States. U.S.D.A. Misc. Publ. 200. HITCH36 Hitchcock, C. L. 1936. The genus Lepidium in the United States. Madroño 3:265-320. HITCH41 Hitchcock, C. L. 1941. A revision of the Drabas of western North America. Univ. Wash. Publ. Biol. 11:1-132. HITCH47 Hitchcock, C. L. 1947. A revision of the North American species of Silene. Univ. Wash. Publ. Biol. 13:1-73. HITCH52 Hitchcock, C. L. 1952. A revision of the North American species of Lathyrus. Univ. Wash. Publ. Biol. 15:1-104. HITCH55 Hitchcock, C. L., A. Cronquist, M. Ownbey & J. W. Thompson. 1955-1969. Vascular plants of the Pacific Northwest. 5 vols. Univ. Washington Press.

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HITCH57 Hitchcock, C. L., & A. Kruckeberg. 1957. A study of the perennial species of Sidalcea. Univ. Wash. Publ. Biol. 18:1- 96. HOCH77 Hoch, P., & P. H. Raven. 1977. New combinations in Epilobium) (ONA). Ann. Mo. Bot. Gard. 64:136. HOFMA98 Hofmann, H. 1998. A monograph of the genus Homalothecium (Brachytheciaceae, Musci. Lindbergia 23:119-159. HOLM23 Holm, T. 1923. The vegetation of the alpine region of the Rocky Mountains in Colorado. Mem. Nat. Acad. Sci. 19:1-45. HOLM50 Holm, R. W. 1950. The American species of Sarcostemma A. Br. (Asclepiadaceae). Ann. Mo. Bot. Gard. 37:477-560. HOLME64 Holmen, K. 1964. Cytotaxonomical studies in the Alaskan flora. Bot. Not. 117:109-118. HOLMG71 Holmgren, P. K. 1971. A biosystematic study of North American Thlaspi montanum and its allies. Mem. N. Y. Bot. Gard. 21:1-106. HOLMG76 Holmgren, A. H., L. M. Shultz & T. K. Lowrey. 1976. Sphaeromeria, a genus closer to Artemisia than to Tanacetum (AST). Brittonia 28:255-262. HOLMG79 Holmgren, N. H. 1979. New Penstemons (SCR) from the Intermountain region. Brittonia 31:217-242. HOLMG88 Holmgren, N. H. 1988. Glossopetalon (CRO) and a new variety of G. spinescens from the Great Basin, U.S.A. Brittonia 40:269-274. HOLUB64 Holub, J. 1964 Miscellanea ad floram Cechoslovacam pertinentia, 1-17. Acta Horti Bot. Pragensis 1963:47-59 [Isoëtes, pp. 54-55]. HOLUB66 Holub, J. 1966. [re Juniperus communis]. Preslia 1:17.1867. HOLUB67 Holub, J. 1967. Neue Namen innerhalb Gentianella, Gentianopsis und Comastoma. Folia Geobot. Phytotax. 2:115- 120. HOLUB73 Holub, J. 1973. New names in Phanerogamae, II. Folia Geobot. Phytotax. 8:155-179. HOLUB76 Holub, J. 1976. New names in Phanerogamae, IV. Fol. Geobot. Phytotax. 11:75-85. HONG80A Hong, W. S. 1980. Hepaticae of Rocky Mountain National Park. Bryologist 83:351-354. HONG80B Hong, W. S. 1980. The genus Scapania in western North America, II. Taxonomic treatment. Bryologist 83:40-59. HONG83A Hong, W. S. 1983a. The genus Gymnomitrium in North America west of the Hundredth Meridian. Lindbergia 9:169- 177. HONG83B Hong, W. S. 1983b. The genus Porella in North America west of the Hundredth Meridian. Bryologist 86:145-155. HONG86 Hong, W. S. 1986. The family Cephaloziellaceae in North America west of the Hundredth Meridian. Bryologist 89:155- 162. HONG88A Hong, W. S. 1988. The family Cephaloziaceae in North America west of the hundredth meridian. Lindbergia 14:79-88. HONG88B Hong, W. S. 1988. The family Lepidoziaceae in North America west of the hundredth meridian. Bryologist 91:326-333. HONG89 Hong, W. S. 1989. The genus Frullania in North America west of the Hundredth Meridian. Bryologist 92:363-367. HONG90 Hong, W. S. 1990. The family Calypogeiaceae in North America west of the Hundredth Meridian. Bryologist 93:313- 318. HONG92 Hong, W. S. 1992. Plagiochila in western North America. Bryologist 95:142-147. HONG93 Hong, W. S. 1993. The family Geocalycaceae (Hepaticae) in North America west of the Hundredth Meridian. Bryologist 96:592-597. HONG94 Hong, W. H. [Tritomaria] in western North America. 1994. Bryologist 97:166-170. HORTO83 Horton, D. G. 1983. A revision of the Encalyptaceae. II. J. Hattori Bot. Lab. 54:353-532. HOWEL47 Howell, J. T. Remarks on Triglochin concinna. Lfl. W. Bot. 5:13-19. HOWEL71A Howell, J. T. 1971. Bibliographic synopsis of Anemopsis. Wasmann J. Bot. 29:97-100. HOWEL71B Howell, J. T. 1971. A new name for "Winter Fat". Wasmann J. Bot. 29:105. HOWEL93 Howell, T. 1893. A rearrangement of American Portulaceae. Erythea 1:29-41. HU54 Hu, S-Y. 1954-56. A monograph of the genus Philadelphus. J. Arnold Arb. 35:275-333; 36:52-109, 325-368; 37:15- 90. HULTE27 Hultén, E. 1927-30. Flora of Kamtchatka and the adjacent islands. Kgl. Vet.-akad. Handl. (3)5, 8.

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HULTE36 Hultén, E. 1936. Contributions to the flora of Alaska I. Sv. Bot. Tidskr. 30:515-538. HULTE41 Hultén, E. 1941-1950. Flora of Alaska and Yukon. Lunds Univ. Årskr. N. F. Adv. (2) 37(1)-46(1). HULTE45 Hultén, E. 1945. Studies in the Potentilla nivea group. Bot. Not. 1945:127-148. HULTE46 Hultén, E. 1946. New species of Astragalus and Oxytropis. Ark. f. Bot. 33B:1-5. HULTE54 Hultén, E. 1954. Artemisia norvegica and its allies. Nytt Mag. Bot. 3:63-82. HULTE56 Hultén, E. 1956. The Cerastium alpinum complex. Sv. Bot. Tidskr. 50:411-495. HULTE58 Hultén, E. 1958. The Amphi-Atlantic plants. Kgl. sv. vetensk.-akad. Handl. (4)7(1):1-340. 278 maps. HULTE59A Hultén, E. 1959. A new species of Saussurea from Colorado. Sv. Bot. Tidskr. 53:200-202. HULTE59B Hultén, E. 1959B. The Trisetum spicatum complex. Sv. Bot. Tidskr. 53:203-228. HULTE62 Hultén, E. 1962. The Circumpolar plants. I. Vascular cryptogams, conifers, monocots. Kgl. sv. vetensk.-akad. Handl. (4)6(5). 275 pp., 228 maps. HULTE64 Hultén, E. 1964. Pedicularis sudetica in Colorado. Sv. Bot. Tidskr. 58:435-437. HULTE67 Hultén, E. 1967. Comments on the flora of Alaska and Yukon. Ark. f. Bot. 7(1):1-147. HULTE68 Hultén, E. 1968. Flora of Alaska and neighboring territories. 1,008 pp. Stanford. HULTE73 Hultén, E. 1973. Supplement to Flora of Alaska and neighboring territories. Bot. Not. 126:459-512. HULTE86 Hultén, E., & M. Fries. 1986. Atlas of North European Plants north of the Tropic of Cancer. 3 volumes. Koeltz. HUNT78 Hunt, D. R. 1978. [title?]. Cac. Succ. J. Brit. 40:13. HUNT79 Hunt, R. S., & E. von Rudloff. 1979. Chemosystematic studies in the genus Abies, IV. Introgression in Abies lasiocarpa and Abies bifolia. Taxon 28:297-305. HYLAN45 Hylander, N. 1945. Nomenklatorische und systematische Studien über nordische Gefässpflanzen. Uppsala Univ. Årskkr. 1:1-377. HYLAN53 Hylander, N. 1953. Nordisk kärlväxtflora, I [ferns through POA]. 392 pp. Almq & Wiks., Stockholm. HYLAN55 Hylander, N. 1955. List of the plants of N. W. Europe. I. Vascular Plants. Lund. HYLAN66 Hylander, N. 1966. Nordisk kärlväxtflora II. [CYP-PLG, with corrections and addenda to vol. 1]. 455 pp. Almq. & Wiks. HYVON89 Hyvönen, J. 1989. A synopsis of genus Pogonatum. Acta Bot. Fenn. 138:1-87. ICBN83 International Code of Botanical Nomenclature. Adopted by the Thirteenth International Botanical Congress, Sydney, August 1981. 1983. 472 pp. ICBN88 Internat. Assoc. for Plant Taxonomy. 1988. International Code of Botanical Nomenclature. 328 pp. IKONN73 Ikonnikov, S. 1973. Notae de Caryophyllaceis, I. Novit. Syst. Plant. Vasc. 30:136-142. ILTIS58A Iltis, H. H. 1958. Studies in Capparidaceae, V. Capparids of New Mexico. Southwestern Nat. 3:133-144. ILTIS58B Iltis, H. H. 1958. Studies in the Capparidaceae, IV. Polanisia. Brittonia 10:33-58. IMSHA51 Imshaug, H. A. 1951. The lichen-forming species of the genus Buellia occurring in the United States and Canada. 217 pp. Unpublished thesis. Univ. Microfilms. IMSHA66 Imshaug, H. A., & I. M. Brodo. 1966. Studies on Lecanora pallida and some related lichens in the Americas. Nova Hedwigia 12:1-59. 12 pl., 2 tab. IRELA64 Ireland, R. R. 1964. Grimmia tenera Zett. Bryologist 67:174-178. IRELA69 Ireland, R. R. 1969. Taxonomic studies on Atrichum. Can. J. Bot. 47:353-368. IRELA82 Ireland, R. R. 1982. Grimmia teretinervis in North America. Bryologist 85:332-334. IRVIN78 Irvine, J. R., & N. E. West. 1978. Rediscovery of Festuca dasyclada. Southwestern Nat. 23:156-157. ISELY75 Isely, D. 1975. Leguminosae of the United States, II. Mem. N. Y. Bot. Gard. 25:1-228. ISELY78 Isely, D. 1978. New varieties and combinations in Lotus, Baptisia, Thermopsis and Sophora (Leguminosae). Brittonia 30:466-472. ISELY83 Isely, D. 1983. New Combinations and two new varieties in Astragalus, Orophaca, and Oxytropis. Syst. Bot. 8:420- 426.

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ISELY84 Isely, D., Astragalus L. II: Species Summary A-E. Iowa State J. Res. 59:99-209. ISELY98 Isely, D. 1998. Native and NNaturalized Leguminosae (Fabaceae) of the United States. 1007 pp. Brigham Young. ISOVI66 Isoviita, P. 1966. Studies on Sphagnum, I. Ann. Bot. Fenn. 3:199-264. IWATS70 Iwatsuki, Z. 1970. A revision of Plagiothecium and related genera from Japan and her adjacent areas, I. J. Hattori Bot. Lab. 33:331-380. JACOB78 Jacobsen, T. D. 1978. A comparative study of three alliances of the genus Allium. Unpublished Ph.D. thesis, Washington State Univ. JAMES23 James, E. 1823. Account of an expedition from Pittsburgh to the Rocky Mountains [in 1819-1820]. 2 vols. Readex Microprint, 1966. JAMES25 James, E. 1825. Catalog of Plants collected during a journey to and from the Rocky Mountains during the summer of 1820. Trans. Amer. Phil. Soc., n.s. 2:191-215. JAMES78 James, T. P. 1878. Musci. U. S. Geogr. Surv. (Wheeler) Rept. 6:342-349. JAMIE76 Jamieson, D. W. 1976. A monograph of the genus Hygrohypnum Lindb. 425 pp. Unpublished Ph.D. thesis, Univ. B. C. JAMIE86 Jamieson, D. W. 1986. Notes on new and rare mosses in southwestern Colorado. Evansia 3:8-11. JANCH25 Janchen, E. 1925. Cistaceae, in Engler & Prantl, Die natürlichen Pflanzenfamilien (2)21:289-313. JANCH63 Janchen, E. 1963. Catalogus Florae Austriae. I. Teil. Pteridophyten und Anthophyten (Farne und Blütenpflanzen). JANSS83A Janssens, J. A. 1983. Past and extant distribution of Drepanocladus in North America, with notes on the differentiation of fossil fragments. J. Hattori Bot. Lab. 54:251-298. JANSS83B Janssens, J. A. 1983. Past and present record of Drepanocladus crassicostatus sp. nov. and the status of D. trichophyllus in North America. Bryologist 86:44-53. JEFFR79 Jeffrey, C. 1979. Note on the lectotypification of the names Cacalia, Matricaria, and Gnaphalium L. Taxon 28:349-351. JOERG73 Jörgensen, P. M. 1973. Einige Leptogium-Arten. Herzogia 2:453-468. JOERG75 Jörgensen, P. M. 1975. Contributions to a monograph of the Mallotium-hairy Leptogium species. Herzogia 3:433-460. JOERG78 Jörgensen, P. M. 1978. The lichen family Pannariaceae in Europe. Opera Bot. 45:1-123. JOERG94A Joergensen, P. M., P. W. James, & C. E. Jarvis. 1994. Linnaean lichen names and their typification. Bot. J. Linn. Soc. 115:261-405. JOERG94A Joergensen, P. M., P. W. James, & C. E. Jarvis. 1994B. Proposals to reject or conserve 26 Linnaean names of lichenized ascomycetes. Taxon 43:646-654. JOERG94B Joergensen, P. M. 1994. Studies in the lichen family Pannariaceae VI: The taxonomy and phytogeogeography of Pannaria Del. s. lat. [Fuscopannaria gen nov. J, Hattori Bot. Lab 76:197-206. JOERG94C Joergensen, P. M., & T. Goward. 1994. Further notes on European taxa of the lichen genus Leptogium, with emphasis on the small species. Lichenologist 26:1-29. JOERG97 Joergensen, P. M. 1997. Further notes on hairy Leptogium species. Symb. Bot. Ups. 32:113-130. JOHNS45 Johnson, B. L. 1945. Natural hybrids between Oryzopsis hymenoides and several species of Stipa. Amer. J. Bot. 32:59-68. f. 1-7. JOHNS52A Johnston, I. M. 1952. Studies in the Boraginaceae XXII. Noteworthy species, chiefly Asian and South American. J. Arnold Arbor. 33:62-78. JOHNS52B Johnston, I. M. 1952. A survey of the genus Lithospermum. J. Arnold Arbor. 33:299-362. JOHNS80 Johnston, B. C. 1980. Studies of population variability leading to a new classification of Potentilla sect. Multijugae. 215 pp. Unpublished Ph.D. Thesis, Univ. of Colorado. JOHNS85 Johnston, B. C. 1985. Studies in Potentilla, I. Key to North American sections. Phytologia 57:292-301. JOHNST90 Johnston, M. C. 1990. The Vascular Plants of Texas. A list, updating the Manual of the Vascular Plants of Texas. 107 pp. Privately published. JONES33 Jones, G. N. 1933. Grimmiaceae, in Grout, Moss Flora of North America. JONES39 Jones, G. N. 1939. A synopsis of the North American species of Sorbus. J. Arnold. Arbor. 20:1-43. JONES40 Jones, G. N. 1940. A monograph of the genus Symphoricarpos. J. Arnold Arbor. 21:201-252.

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JONES43 Jones, G. N., & F. F. Jones. 1943. A revision of the perennial species of Geranium of the United States and Canada. Rhodora 45:5-26;32-53. JONES46 Jones, G. N. 1946. American species of Amelanchier. Illinois Biol. Monogr. 20(2):1-126. JONES51 Jones, Q. 1951. A cytotaxonomic study of the genus Disporum in North America. Contrib. Gray Herb. 173:1-40. JONES57 Jones, G. N. 1957. On the specific distinctness of Rudbeckia laciniata and R. ampla. Madroño 14:131-133. JONES75 Jones, A. G. 1975. The status of Aster adsurgens E. L. Greene. Taxon 24:357-360. JORDA73 Jordan, W. P. 1973. The genus Lobaria in North America north of Mexico. Bryologist 76:225-251. JORGE83 Joergensen, P. M., & P. W. James. 1983. Studies of some Leptogium species of western Europe. Lichenologist 15:109-125. JOVET65 Jovet-Ast, S. 1964. Riccia crystallina et R. cavernosa. Rev. Bry. Lich. 33:459-482. KALB83A Kalb, Klaus. 1983. Lichenes Neotropicae, Fasc. VI (No. 201-250). Scheda. Neumarkt/Opf. KALB83B Kalb, K. 1983. Lichenes Neotropicae, Fasc. VII (No. 251-300). Scheda. Neumarkt/OPf. KALEL40 Kalela, A. 1940. Beiträge Flora Ostpatagoniens. Ann. Acad. Sci. Fenn. Ser. A, 54:1-70. KANDA75 Kanda, H. 1975-1976. A revision of the family Amblystegiaceae of Japan. J. Sci., Hiroshima Univ. Ser. B, Div. 2, 15:201-276; 16:47-119. KAPOO70 Kapoor, B. M., & A. Löve. 1970. Chromosomes of Rocky Mountain Ranunculus. Caryologia 23:575-594. KARBE96 Kärnefelt, I., & A. Thell. 1996. A new classification for the Dactylina/Dufourea complex. Nova Hedw. 62:487-511. KARLS87 Karlsson, T. 1987. Två Setaria-arter nya för svenska floran [Setaria adhaerens and S. faberi new to Sweden]. Svensk Bot. Tidskr. 81:305-311. KARNE79 Kärnefelt, I. 1979. The brown fruticose species of Cetraria. Opera Bot. 46:1-150. KARNE86 Kärnefelt, I. 1986. The genera Bryocaulon, Coelocaulon and Cornicularia and formerly associated taxa. Opera Bot. 86:1-90. KARNE93 Kärnefelt, I., J.-E. Mattsson, & A. Thell. 1993. The genera Arctocetraria, Cetraria, and Cetrariella and their presumed evolutionary affinities. Bryologist 96:394-404. KARNE94 Kärnefelt, I., T. Randlane, & A. Saag. 1994. The genus Flavosetraria Kärnefelt & Thell: a new segregation in the family Parmeliaceae and its affinities. Acta Bot. Fenn. 150:79-86. KAZMI64 Kazmi, S. M. A. 1964. Revision der Gattung Carduus, II. Mitt. Bot. Staatssamml. München 5:279-550. KEARN39 Kearney, T. H., & R. H. Peebles. 1939. Flowering plants and ferns of Arizona. 1,069 pp. U.S.D.A. Misc. Publ. 423. KEARN60 Kearney, T. H., & R. H. Peebles. 1960. Arizona Flora ed. 2. 1,085 pp. Univ. Calif. Press. KECK46 Keck, D. D. 1946. A revision of the Artemisia vulgaris complex in North America. Proc. Calif. Acad. Sci. (4)25:421- 468. KELLE82 Kelley, W., G. Bryant & D. Wilken. 1982. Noteworthy collections, Colorado. Madroño 29:274. KELLE83 Kelley, W. 1983. Noteworthy collections, Colorado [Cryptantha mensana]. Madroño 30:258. KELLE84 Kelley, W. 1984. Noteworthy Collections, Colorado [Phacelia constancei]. Madroño 32:57. KELSO53 Kelso, L. 1953. The Carex species of Colorado. Biol. Lfl. 66:1-38. KELSO72 Kelso, L. 1972. The Carex continuum. Biol. Lfl. 88. KILIA84 Kilias, H. 1984 [1985]. Catillaria sculpturata and C. crystallifera Kilias, sp. nov., two `window' lichens with a wide distribution. Bryologist 87:327-331. [The Colorado plant is C. crystallifera, disjunct in South Africa]. KINDB09 Kindberg, N. C. 1909. Bryological notes. Rev. Bry. Lich. 36:97-100. KING70A King, R. M., & H. Robinson. 1970. The new synantherology. Taxon 19:6-11. KING70B King, R. M., & H. Robinson. 1970. New combinations in Ageratina. Phytologia 19:208-229. KING70C King, R. M., & H. Robinson. 1970. Studies in the Eupatorieae (AST). XXV. A new genus, Eupatoriadelphus. Phytologia 19:431-432. KING87 King, R. M., & H. Robinson. 1987. The genera of the Eupatoriae (Compositae). Mo. Bot. Gard. Monogr. Syst. Bot. 22: 1-581.

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KNOPH90 Knoph, Johannes-G. 1990. Untersuchungen an gesteinsbewohnenden xanthonhaltigen Sippen der Flechtengattung [Lecidella] ... exklusive Amerika. Bibl. Lich. 36:1-183. KOCH51 Koch, L. F. 1951. The nomenclature of Bryum annotinum. Rev. Bry. Lich. 20:258-259. KOCH85 Koch, S. D., & I. Sanchez Vega. 1985. Eragrostis mexicana, E. neomexicana, E. orcuttiana and E. virescens: the resolution of a taxonomic problem. Phytologia 58:377-381. KOERB55 Koerber, G. W. 1855. Systema Lichenum Germaniae. 459 pp., 4 plates. KOHLI76 Kohli, B., & J. G. Packer. 1976. A contribution to the taxonomy of the Potentilla pensylvanica complex in North America. Can. J. Bot. 54:706-719. KOPON68A Koponen, T. 1968. The moss genus Plagiomnium sect. Rosulata. Ann. Bot. Fenn. 5:213-224. KOPON68B Koponen, T. 1968. The moss genus Rhizomnium. Mem. Soc. Flora Fauna Fenn. 44:33-50. KOPON71 Koponen, T. 1971. Monograph of Plagiomnium sect. Rosulata. Ann. Bot. Fenn. 8:305-367. KOPON72 Koponen, T. 1972. Notes on Mnium arizonicum and M. thomsonii. Lindbergia 1:161-175. KOPON73 Koponen, T. 1973. Mnium spinosum in North America. Ann. Bot. Fenn. 10:102-103. KOPON78 Koponen, T. 1978. On the taxonomy and phytogeography of Mnium Hedw., s. str. Abstracta Bot. 5, Suppl. 3:63-73. KOPON88 Koponen, T. 1988. The phylogeny and classification of Mniaceae and Rhizogoniaceae (Musci). J. Hattori Bot. Lab. 64:37-46. KOTTE83 Kotter, M., and R. Fogel. 1983. Notes on hypogeous fungi from Colorado. Mycotaxon 18:145-148. KOYAM62 Koyama, T. 1962. The genus Scirpus: some North American aphylloid species. Can. J. Bot. 40:913-937. KOYAM64 Koyama, T., & S. Kuwano. 1964. Critical taxa of grasses. Can. J. Bot. 42:859-884. KRAL71 Kral, R. 1971. A treatment of Abildgaardia, Bulbostylis, and Fimbristylis (Cyperaceae) for North America. Sida 4:57- 227. KRAME80 Kramer, W. 1980. Tortula Hedw. Sect. Rurales De Not. in der östlichen Holarktis. Bryoph. Bibl. 21:1-165. KROG74 Krog, H. 1974. Taxonomic studies in the Hypogymnia intestiniformis complex. Lichenologist 6:135-140. KROG79 Krog, H., & T.D.V. Swinscow. 1979. Parmelia subgenus Hypotrachyna in East Africa. Norw. J. Bot. 23:153-175. KROG82 Krog, H. 1982. Punctelia, a new genus in the Parmeliaceae. Nordic J. Bot. 2:287-292. KUPCH61 Kupchan, S. M., J. H. Zimmermann & A. Afonso. 1961. The alkaloids and taxonomy of Veratrum. Lloydia 24:1-26. KUROK62 Kurokawa, S. 1962, A monograsph og the genus Anaptychia. Nova Hedwigia 6:1-115. 9 plates. KUROK73 Kurokawa, S. 1973. Supplementary notes on Anaptychia. J. Hattori Bot. Lab. 37:563-607. KUWAH65 Kuwahara, Y. 1965. Metzgeriaceae in Himalaya and Borneo. J. Hattori Bot. Lab. 28:166-170, 292-298. KUWAH66 Kuwahara, Y. 1966. Metzgeriaceae in southeast Asia. Rev. Bry. Lich. 34:193-239. LAFRA86 LaFrankie, J. V., Jr. 1986. Transfer of the species of Smilacina to Maianthemum (Liliaceae). Taxon 35:584-589. LAMB63 Lamb, I. M. 1963. Index nominum lichenum inter annos 1932 et 1960 divulgatorum. 809 pp. Ronald Press. LAMB74A Lamb, I. M., & A. Ward. 1974. Preliminary conspectus of the species attributed to the imperfect lichen genus Leprocaulon. J. Hattori Bot. Lab. 38:499-553. LAMB74B Lamb, I. M. 1974. Keys to the lichen genus Stereocaulon (Schreb.) Hoffm. J. Hatt. Bot. Lab. 44:209-250. LAMB77 Lamb, I. M. 1977. A conspectus of the lichen genus Stereocaulon (Schreb.) Hoffm. J. Hattori Bot. Lab. 43L191-355. LANDO75 Landolt, E. 1975. Morphological differentiation and geographical distribution of the Lemna gibba - Lemna minor group. Aquatic Bot. 1:345-363. LANDO80A Landolt, E. 1980. Key to the determination of taxa within the family of Lemnaceae. Veröff. Geobot. Inst. ETH, Stift. Rübel, Zürich 70:13-21. LANDO80B Landolt, E. 1980. Biosystematische Untersuchungen in der Familie der Wasserlinsen (Lemnaceae). Veröff. Geobot. Inst. eidg. techn. Hochschule, Stift. Rübel, Zürich 70:1-247. LANDO94 Landolt, E. 1994. Taxonomy and ecology of the section Wolffia of the genus Wolffia (Lemnaceae). Ber. Geobot. Inst. Stiftung Rubel 60:137-151. LANE85 Lane, M. R. 1985. Taxonomy of Gutierrezia in North America. Syst. Bot. 10:7-28.

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LANG69 Lang, F. A. 1961. A new name for a species of Polypodium from northwestern North America. Madroño 20:53-60. LASSE89 Lassen, P. 1989. A new delimitation of the genera Coronilla, Hippocrepis, and Securigera (Fabaceae). Willdenowia 19:49-62. LAUND74 Laundon, J. R. 1974. Leproplaca in the British Isles. Lichenologist 6:102-105. LAUND76 Laundon, J. R. 91976. Lichens new to the British flora, 5. Lichenologist 8:139-150. LAUND84 Laundon, J. R. 1984. The typification of Withering's neglected lichens. Lichenologist 16:211-239. LAUND89 Laundon, J. R. 1989. The species of Leproloma--the name for the Lepraria membranacea group. Lichenologist 21:1- 22. LAUND92 Laundon, Jack R. 1992. [Lepraria] in the British Isles. Lichenologist 24:315-350. LAWTO57 Lawton, E. 1957. A revision of the genus Lescuraea in Europe and North America. Bull. Torr. Bot. Club 84:281-307. LAWTO65 Lawton, E. 1965. Revision of Homalothecium. Bull. Torr. Bot. Club 92:333-354. LAWTO67 Lawton, E. 1967. Grimmia occidentalis. Bull. Torr. Bot. Club 94:461-463. LAWTO71 Lawton, E. 1971. Moss Flora of the Pacific Northwest.362 pp., 195 plates. Hattori Bot. Lab. LECHN56 Lechner-Pock, L. 1956. Eritrichium nanum und seine Verwandten. Phyton 6:98-206. LEGRA62 Legrand, C. D. 1962. Las especies Americanas de Portulaca. An. Mus. Hist. Nat. Montevideo II. LELLI81 Lellinger, D. B. 1981. Notes on North American Ferns. Amer. Fern J. 71:90-94. LELLI85 Lellinger, D. B. 1985. A field manual of the ferns and fern allies of the United States and Canada. 389 pp. Smithsonian Inst. Press, Washington. LESQU74 Lesquereux, L. 1874. The Cretaceous Flora. [in] Hayden, F. V. Rept. U. S. Geol. Surv. Terr. 6. LEWIN78 Lewinsky, J. 1978 [1979]. The taxonomic status of Orthotrichum pellucidum Lindl. Lindbergia 4:199-201. LEWIS59 Lewis, W. H. 1959. A monograph of the genus Rosa in North America. I. R. acicularis. Brittonia 11:1-24. LEWIS64 Lewis, H., & J. Szweykowski. 1964. The genus Gayophytum. Brittonia 16:343-391. LEWIS65 Lewis, W. H., & R. L. Oliver. Realignment of Calystegia and Convolvulus. Ann. Mo. Bot. Gard. 52:217-222. LEY43 Ley, A. 1943. A taxonomic revision of the genus Holodiscus. Bull. Torr. Bot. Club 70:275-288. LIEDE96 Liede, S. 1996. Sarcostemma (Asclepiadaceae): A controversial generic circumscription reconsidered: Morphological evidence. Syst. Bot. 21:31-44. LINDB97 Lindblom, L. 1997. The genus Xanthoria (Fr.0 Th. Fr. in North America. J. Hattori Bot. Lab. 83:75-172. LINDS85 Lindsey, J. P. 1985. Basidiomycetes that decay Gambel oak in southwestern Colorado. Mycotaxon 22:327-362; 25:67- 83. LIPSC79 Lipschitz, S. 1979. Genus Saussurea DC. (Asteraceae). 283 pp. Nauka, Sectio Leninopolitana. LITTL53 Little, E. L. 1953. Checklist of native and naturalized trees of the United States. 375 pp. U.S.D.A. Forest Service Handbook 541. LIVIN49 Livingston, R. B. 1949. An ecological survey of the Flack Forest, Colorado. Ecol. Monogr. 19:123-144. LIVIN52 Livingston, R. B. 1952. Relict true prairie communities in central Colorado. Ecology 33:77-86. LLANO50 Llano, G. A. 1950. A monograph of the lichen family Umbilicariaceae in the Western Hemisphere. 281 pp. Office of Naval Res., Washington, D.C. LLOYD64 Lloyd, R. M., & F. A. Lang. 1964. Polypodium vulgare complex in North America. Brit. Fern Gaz. 9:168-177. LOUIS28 Louis-Marie, Fr. 1928. The genus Trisetum in America. Rhodora 30:209-223; 237-245. LOVE54A Löve, A., & D. Löve. 1954. Cytotaxonomical studies on the northern bedstraw. Amer. Midl. Nat. 52:88-105. LOVE54B Löve, A. 1954. Cytotaxonomical remarks on some circumpolar taxa. Sv. Bot. Tidskr. 48:211-232. LOVE58 Löve, A., & D. Löve. 1958. Biosystematics of Triglochin maritima agg. Nat. Can. 85:156-165. LOVE61 Löve, A. 1961. Some nomenclatural changes in the European flora. I. Species and supraspecific categories. Bot. Not. 114:33-47.

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LOVE65 Löve, A., & D. Löve. 1965. Taxonomic remarks on some North American alpine plants. Univ. Colo. Stud., Ser. Biol. 17:1-43. LOVE68 Löve, A., & W. Simon. 1968. Cytotaxonomical notes on American orchids. Southwestern Nat. 13:335-342. LOVE69 Löve, A. 1969. The plants of the Queen Charlotte Islands [review]. Taxon 18:225-229. LOVE69A Löve, D. 1969. Papaver at high altitudes in the Rocky Mountains. Brittonia 21:1-10 LOVE70 Löve, A. 1970. Emendations in the Icelandic flora. Taxon 19:298-302. LOVE71 Löve, A., D. Löve & B. Kapoor. 1971. Cytotaxonomy of a century of Rocky Mountain orophytes. Arctic Alpine Res. 3:139-145. LOVE72 Löve, A., & E. Kjellkvist. 1972. Cytotaxonomical vindication of the genus Conosilene. J. Indian Bot. Soc. 50A:366-376. LOVE74 Löve, A. & D. 1974. Taxonomical atlas of the Slovenian flora. 1241 pp. J. Cramer. LOVE75A Löve, A. 1975. Cytotaxonomical atlas of the Arctic flora. 597 pp. J. Cramer. LOVE75B Löve, D. 1975. The genus Acanthoxanthium. Lagascalia 5:55-71. LOVE75C Löve, A., & D. Löve. 1975 [1976]. Nomenclatural notes on Arctic plants. Bot. Not. 128:497-523. LOVE76 Löve, A., & D. Löve. 1976. The natural genera of Gentianaceae. Recent Advances Bot. 205-222. LOVE77 Löve, A., D. Löve, & R. E. G. Pichi Sermolli. 1977. Cytotaxonomical atlas of the Pteridophyta. 398 pp. J. Cramer. LOVE80A Löve, A. 1980. IOPB chromosome number reports LXVI. Taxon 29:163-169. LOVE80B Löve, A. 1980. IOPB chromosome number reports LXVI, LXVII, addendum. Taxon 29:547, 568. LOVE81 Löve, A. 1981. IOPB chromosome number reports LXII. Taxon 30:511. LOVE82A Löve, A. 1982. IOPB chromosome number reports LXXIV. Taxon 31:119-128 (Polygonum on p. 122). LOVE82B Löve, A. 1982. IOPB chromosome number reports LXXV. Taxon 31:342-368. LOVE83 Löve, A. 1983. Flora of Iceland. 403 pp. Almenna, Reykjavik. LOVE84 Löve, A. 1984. Conspectus of the Triticeae. Fedde Repert. Sp. Nov. 95:425-521. LOVE85 Löve, A. 1985. Chromosome number reports, LXXXVII. Taxon 34:346-351. LUCKO93 Luckow, M. 1993. Monograph of [Desmanthus] (Leguminosae-Mimosoideae). Syst. Bot. Monogr. 38:1-166. LUMBS83 Lumbsch, H. T. 1983. [in] Hertel, H. Lecideaceae Exsiccati, Fasc. V, (No. 81-100), scheda. LUMBS88 Lumbsch, H. T. 1988. The identity of Diploschistes gypsaceus. Lichenologist 20:19-24. LUMBS89 Lumbsch, H. T. 1989. Die holarktischen Vertreter der Flechtengattung Diploschistes (Thelotremataceae). J. Hattori Bot. Lab. 66:133-296. LUMBS92 Lumbsch, H. T. 1992. Lecanora argentea Oxner & Volkova, the correct name for L. fuliginosa Brodo, and comments on related species. Bryologist 95:430-432. MACKE31 Mackenzie, K. K. 1931. Carex, in North Amer. Flora 18:1-478. MAGNU29 Magnusson, A. H. 1929. A monograph of the genus Acarospora. Kgl. sv. vet.-Akad. Handl. 7(4):1-400. MAGNU34 Magnusson, A. H. 1934. On the species of Biatorella and Sarcogyne in America. Ann. Crypt. Exot. 7:115-146. MAGNU36 Magnusson, A. H. 1936. On saxicolous species of the genus Lecidea proper to North America. Acta Horti Goteb. 10:1-52. MAGNU44 Magnusson, A. H. 1944. Some species of Caloplaca. Bot. Not. 1944:63-69. MAGNU52 Magnusson, A. H. 1952. New crustaceous lichen species from North America. Acta Horti Goteb. 19(1):31-49. MAGNU56 Magnusson, A. H. 1956. A second supplement to the monograph of Acarospora, with keys. Göteb. k. vet. vitt. Samh. Handl. (6)B, 6(17):1-34. MAGUI43 Maguire, B. 1943. A monograph of the genus Arnica. Brittonia 4:323-527. MAGUI51 Maguire, B. 1951. Studies in Caryophyllaceae: Arenaria. Amer. Midl. Nat. 46:493-511. MANGA68 Mangaly, J. 1968. A study of the herbaceous species of Smilax sect. Coprosmanthus. Rhodora 70:55-82; 247-273. MARTI46 Martin, J. J. 1946. Notes on Trifolium. Bull. Torr. Bot. Club 73:366-369.

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MARTI50 Martin, F. L. 1950. A revision of Cercocarpus. Brittonia 7:91-111. MARTI80 Martin, W. C., & C. R. Hutchins. 1980. A flora of New Mexico. 2 vols. J. Cramer, Vaduz MASON57 Mason, H. L. 1957. A flora of the marshes of California. Univ. Calif. Press. MATH44 Mathias, M., & L. Constance. 1944. Umbelliferae, in North Amer. Flora 28B:43-397. MATTH85 Matthews, J. F., & P. A. Levins. 1985. Portulaca pilosa L., P. mundula Johnst., and P. parvula Gray in the southwest. Sida 11:45-61. MATTH93 Matthews, J. F., D. W. Ketron, & S. F. Zane. 1993. The biology and taxonomy of the Portulaca oleracea L. (Portulacaceae) complex in North America. Rhodora 95:166-183. MATTS93 Mattsson, J.-E. 1993. A monograph of the genus Vulpicida. Opera Bot. 119:5-61. MATTS93a Mattsson, J.-E., & M.-J. Lai. Vulpicida.a new genus in Parmeliaceae. Mycotaxon 49:425-428. MATTS93b Mattsson, J.-E. 1993. A monograph of the genus Vulpicida. Opera Bot. 119. 61 pp. MAXON04 Maxon, W. R. 1904. The relationship of Asplenium adiantum-nigrum. Contrib. U. S. Nat. Herb. 16:1-3. 1 plate. MAXON12 Maxon, W. R. 1912. The relationship of Asplenium andrewsii. Contrib. U. S. Nat. Herb. 16:1-2. MAYRH78 Mayrhofer, H., & J. Poelt. 1978. Phaeorhiza, eine neue Gattung der Physciaceae (Lichenes). Nova Hedwigia 30:781- 798. MAYRH87 Mayrhofer, H., & J. Poelt. 1987. Monographie der Flechtengattung Thelenella. Bibl. Lichenol. 26:1-106. 58 figs. MAYRH90 Mayrhofer, H., C. Scheidegger, & J. W. Sheard. 1990. Rinodina lecanorina and R. luridata, two closely related species on calciferous rocks. Bibl. Lich. 38:335-356. MCCUN87 McCune, B. 1987. Distribution of chemotypes of Rhizoplaca in North America. Bryologist 90:6-14. MCCUN95 McCune, B., & T. Goward. 1995. Macrolichens of the Northern Rocky Mountains. 208 pp. Mad River Press. MCCUN98A McCune, B., et al. 1998. Lichen communities for forest health monitoring in Colorado, USA. A report to the USDA Forest Service. 19 pp. typescript. Oregon State University, Corvalis. MCCUN98B McCune, B. 1998. Lichens of granite peaks of the Bitterroot Range, Montana and Idaho. Lichenographia Thomsoniana 281-294. MCGRE82 McGregor, R. L., & R. E. Brooks. 1982. James H. Carruth and disposition of his new names based on Kansas plants. Contrib. Univ. Kansas Herb. 1:1-6. MCGRE84A McGregor, R. L. 1984. Camelina rumelica, another weedy mustard established in North America. Phytologia 55:227- 228. MCGRE84B McGregor, R. L. 1984. Cryptantha crassisepala var. crassisepala (BOR) in Colorado, Kansas and Oklahoma. Contrib. Univ. Kansas Herb. 11:1-3. MCKIN92 McKinney, L. E. 1992. A taxonomic revision of the acaulescent blue violets ([Viola]) of North America. Sida, Bot. Misc. 7:ivi, 1-60. MCNEI77 McNeill, J., I. J. Bassett, & C. W. Crompton. 1977. Suaeda calceoliformis, the correct name for Suaeda depressa auctt.. Rhodora 79:133-138. MCNEI79 McNeill, J. 1979. Diplachne and Leptochloa (Poaceae) in North America. Brittonia 31:399-404. MCNEI79A McNeill, J. 1979. Diplachne and Leptochloa (POA) in North America. Brittonia 31:399-404. MCNEI79B McNeill, J., I. J. Bassett & C. W. Crompton. 1979. Atriplex suckleyi (Torr.) Rydb., the correct name for A. dioica (Nutt.) Macbr. Taxon 28:588-589. MCPHE74 McPherson, G. D., & J. G. Packer. 1974. A contribution to the taxonomy of Viola adunca. Can. J. Bot. 52:895-902. MCVAU45 McVaugh, Rogers. 1945. The genus Triodanis Rafinesque and its relationships to Specularia and Campanula. Wrightia 1:13-52. MCVAU72 McVaugh, R. 1972. Nomenclatural and taxonomic notes on Mexican Compositae. Rhodora 74:495-516. Discussion of Gnaphalium viscosum vs. G. macounii. MCVAU84 McVaugh, R. 1984. Flora Novo-Galiciana, vol. 12, Compositae. Univ. Mich. Press. MEEUS71 Meeuse, A. D. J., & A. Smit. 1971. A new combination in Krascheninnikovia (CHN). Taxon 20:644. MERRI92 Merrill, G. L. S. 1992. Notes on North American Polytrichaceae: Polytrichastrum. Bryologist 95:270-273.

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MERXM63 Merxmüller, H., & J. Grau. 1963. Chromosomenzahlen aus der Gattung Myosotis L. Ber. Deutsch. Bot. Ges. 76:23- 29. MEYER51 Meyer, F. G. 1951. Valeriana in North America and the West Indies. Ann. Mo. Bot. Gard. 38:377-503. MEYER82 Meyer, S. L. F. 1982. Segregation of the new lichen genus Foraminella from Parmeliopsis. Mycologia 74:592-598. MEYER85 Meyer, S.L.F. 1985. The new lichen genus Imshaugia. Mycologia 77:336-338. MICKE79 Mickel, John. 1979. The fern genus Cheilanthes in continental United States. Phytologia 41:431-437. MILLE67 Miller, K. I., & G. L. Webster. 1967. A preliminary revision of Tragia (EUP) in the United States. Rhodora 69:241-305. MOBER77 Moberg, R. 1977. The lichen genus Physcia and allied genera in Fennoscandia. Symb. Bot. Upsal. 22:1-108. MOBER80 Moberg, Roland. 1980. Anaptychia ulotrichoides new to North America. Bryologist 83:251-252. MONDR78 Mondrus, M. A. 1978. Morphological and cytological relationships between Stipa robusta and Stipa viridula (Gramineae; Stipeae). Proc. Iowa Acad. Sci. 85:84-87. MOORE65 Moore, R. J., & C. Frankton. 1965. Cytotaxonomy of Cirsium hookerianum. Can. J. Bot. 43:597-613. MOORE67 Moore, R. J., & C. Frankton. 1967. Cytotaxonomy of foliose thistles. Can. J. Bot. 45:1733-1749. MOORE74 Moore, R. J., & C. Frankton. 1974. The Cirsium arizonicum complex. Can. J. Bot. 52:543-551. MOORE75 Moore, R. J. 1975. The Galium aparine complex. Can. J. Bot. 53:877-893. MOORE91 Moore, M. O. 1991. Classification and systematics of eastern North American Vitis (Vitaceae) north of Mexico. Sida 14:339-367. MOSYA95 Mosyakin. 1995. New taxa of Corispermum L. (Chenopodiaceae), with preliminary comments on the taxonomy of the genus in North America. Novon 5:340-353. MUELL95 Mueller-Argoviensis, J. 1895. Lichenes. Pp. 199-201 in Britton, N. L., & A. M. Vail. An enumeration of the plants collected by M. E. Penard in Colorado during the summer of 1892. Bull. Herb. Boiss. 3:197-221. MULLI61 Mulligan, G. A. 1961. The genus Lepidium in Canada. Madroño 16:77-90. MULLI66 Mulligan, G. A. 1966. Two new species of Physaria from Colorado. Can. J. Bot. 44:1661-1666. MULLI67A Mulligan, G. A. 1967. Cytotaxonomy of Physaria acutifolia, P. chambersii, and P. newberryi (BRA). Can. J. Bot. 45:1887-1898. MULLI67B Mulligan, G. A. 1967. Physaria didymocarpa, P. brassicoides, and P. floribunda (BRA) and their close relatives. Can. J. Bot. 46:735-740. MULLI75 Mulligan, G. A. 1975. Draba crassifolia, D. albertina, D. nemorosa and D. stenoloba in Canada and Alaska. Can. J. Bot. 53:745-751. MUMME91 Mummenhoff, K., & K. Zunk. 1991. Should Thaspi (Brassicaceae) be split? Preliminary evidence from isoelectric focusing analysis of Rubisco. Taxon 40:427-434. MUNZ30 Munz, P. A. 1930 [1931]. The North American species of Orobanche, section Myzorhiza. Bull. Torr. Bot. Club 57:611- 524. MUNZ38 Munz, P. A. 1938. A revision of the genus Gaura. Bull. Torr. Bot. Club 65:105-122; 211-228. MUNZ46 Munz, P. A. 1946. Aquilegia: the wild and cultivated columbines. Gentes Herb. 7:1-150. MUNZ49 Munz, P. A. 1949. A new columbine from Colorado. Lfl. W. Bot. 5:177-179. MUNZ59 Munz, P. A., & D. D. Keck. 1959. A California Flora. 1,681 pp. Univ. California Press. MUNZ65 Munz, P. A. 1965. Onagraceae, in North Amer. Flora (2)5:1-231.1965. MURRA69 Murray, D. F. 1969. Taxonomy of Carex sect. Atratae. Brittonia 21:55-76. NASH90 Nash, T. H., J. Hafellner, & R. S. Common. 1990. Omphalora, a new genus in the Parmeliaceae. Lichenologist 22:355-365. NEESE86 Neese, Elizabeth C. 1986. New taxa and nomenclatural changes in Utah Penstemon (SCR). Great Basin Nat. 46:459- 460. NELSO04 Nelson, A. 1904. Plantae Andrewsianae. Proc. Biol. Soc. Wash. 17:173-180. NELSO73 Nelson, P. P. 1973. Leptodon smithii (Musci, Neckeraceae), a genus new to North America. Bryologist 76:434-437.

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NELSO93 Nelson, J. K., & W. E. Harmon. 1993. Discovery of Subularia aquatica L. in Colorado and the extension of its range. Rhodora 95:155-157. NELSO97 Nelson, J. K., & W. E. Harmon. 1997. The subalpine and alpine vascular flora of the Neota Wilderness area in the northern Never Summer Range of north-central Colorado. Phytologia 83:286-301. NESOIM90b NESOM83 Nesom, G. L. 1983. Taxonomy of Erigeron concinnus (Asteraceae) and its separation from E. pumilus. Sida 10:159- 166. NESOM88 Nesom, G. L. 1988. Synopsis of [Chaetopappa] (Asteraceae), with a new species and the inclusion of [Leucelene]. Phytologia 64:448-456. NESOM89A Nesom, G. L. 1989. The separation of Trimorpha from Erigeron. Phytologia 67:61-66. NESOM89B Nesom, G. L. 1989. Infrageneric taxonomy of New World Erigeron. Phytologia 67:67-93. NESOM90A Nesom, G. L. 1990. Taxonomic summary of Ericameria (Asteraceae: Astereae)< with the inclusion of Haplopappus sects. Macronema and Asiris. Phytologia 68:144-155. NESOM90B Nesom, G. L. 1990. Reinstatement of Tonestus (Asteraceae: Astereae). Phytologia 68:174-180. NESOM94 Nesom, G. L. 1994. Review of the taxonomy of Aster sensu lato emphasizing the New World Species. Phytologia 77:141-297. NESOM97 Nesom, G.L. 1997. Review: A revision of Heterotheca sect. Phyllotheca (Nutt.) Harms (Compositae: Astereae) by J. C. Semple. NEWSO29 Newsom, V. M. 1929. A revision of the genus Collinsia. Bot. Gaz 87:260-301. NIMIS94 Nimis, P.L., J. Poelt, & M. Tretiach. 1994. [Caloplaca wetmorei], a new lichen species frp, western North America. Bryologist 97:182-185. NISBE61 Nisbet, G. J., & B. G. Jackson. 1961. The genus Penstemon in New Mexico. Univ. Kansas Sci. Bull. 41:691-759. NOBLE87 Noble, W. J., et al. 1987. A second checklist and bibliography of the lichens and allied fungi of British Columbia. Syllogeus 61, Nat. Mus. Can., Ottawa. NORDI72 Nordin, I. 1972. Caloplaca. sect. Gasparrinia i Nordeuropa: taxonomiska och ekologiska studier. 184 pp. Skriv Service AB, Uppsala. NORDI99 Nordin, A. 1999. Buellia species with pluriseptate spores: New and unrecorded species in North America. Bryologist 102:249=-264. NUTTA41 Nuttall, T. 1841. Descriptions of new species and genera of plants in the natural order of the Compositae . . . Trans. Amer. Phil. Soc. (2)7:283-453. NYHOL54 Nyholm, E. 1954-1969. Illustrated moss flora of Scandinavia. Vol. 2. Musci. 799 pp. Gleerup, Lund. OCHI69 Ochi, H. 1969. Notes on moss flora, VI. Hikobia 5:153-171. OCHI80 Ochi, H. 1980. A revision of the neotropical Bryoideae, Musci (first part). J. Fac. Education, Tottori Univ., Nat. Sci. 29:49-154. OCHYR81 Ochyra, R. 1981. Musci Poloniae Exsiccati (Scheda), Fasc. V. Fragm. Florist. Geobot. 26:365-418. OCHYR89 Ochyra, R. 1989. Animadversions on the moss genus Cratoneuron (Sull.) Spruce. J. Hattori Bot. Lab. 67:203-242. OHLSS73 Ohlsson, K. E. 1973. New and interesting macrolichens of British Columbia. Bryologist 76:366-387. OKANE87 O'Kane, S. L. Jr., & J. L. Anderson. 1987. Penstemon debilis: A new species from Colorado endemic to oil shale. Brittonia 39:412-416. OKANE88A O'Kane, S. L., D. H. Wilken, & R. L. Hartman. 1988. Noteworthy collections: Colorado. Madroño 35:72-74. OKANE88B O'Kane, S. L. 1988. Colorado's rare flora. Great Basin Nat. 48:434-484. OKANE89 O'Kane, S., E. Neely, & D. Wilken. 1989. Noteworthy collections: Colorado. Madroño 35:353-359.1988 [March 1989]. ONEIL42 O'Neill, Hugh. 1942. Status of Cyperus inflexus, [in] Status and distribution of some Cyperaceae in North and South America. Rhodora 44:43-64. OOOALLSTR Thell, A., T. Randlane, et al. 1995. The lichen genus Allocetraria (Ascomycotina, Parmeliaceae). Flechten Follmann (Contributions to lichenology in honour of Gerhard Follmann, 353-370. ORANG98 Orange, A. 1998. Dermatocarpon leptophylloides and related species in the British Isles. Lichenologist 30:1-209.

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OSTER11 Osterhout, G. E. 1911. Two new species from Colorado. Muhlenbergia 7:11-12. OWNBE40 Ownbey, M. 1940. A monograph of the genus Calochortus. Ann. Mo. Bot. Gard. 27:371-560. OWNBE44 Ownbey, R. P. 1944. The Liliaceous genus Polygonatum in North America. Ann. Mo. Bot. Gard. 31:373-413. OWNBE47 Ownbey, G. 1947. Monograph of the North American species of Corydalis. Ann. Mo. Bot. Gard. 34:187-206. OWNBE52 Ownbey, G. 1952. Nuttall's Great Plains species of Cirsium: C. undulatum and C. canescens. Rhodora 54:29-35. OWNBE55 Ownbey, M., & H. Aase. 1955. Cytotaxonomic studies in Allium, I. The Allium canadense alliance. Res. Stud. State Coll. Wash. Monogr. Suppl. 1:1-106. OWNBE58 Ownbey, G. 1958. Monograph of Argemone. Mem. Torr. Bot. Club 21:1-159. OZEND70 Ozenda, P., & G. Clauzade. 1970. Les Lichens. Étude biologique et flore ilustrée. 881 pp. Masson & Cie. PACKE74 Packer, J. G., & K. E. Denford. 1974. A contribution to the taxonomy of Arctostaphylos uva-ursi. Can. J. Bot. 52:743- 753. PALOM90 Palomino H., Guadalupe, M. Segura D., R. Bye, & P. Mercado R. 1990. Cytogenetic distinction between Teloxys and Chenopodium (CHN). Southwestern Nat. 35:351-353. PALSE91 Palser, B. F., W. R. Philipson, & M. N. Philipson. 1991. Characteristics of ovary, ovule, and mature megagametophyte in Rhododendron L. (ERI) and their taxonomic significance. Bot. J. Linn. Soc. 105:289-390. PARKE80 Parker, Kittie F. 1980. New combinations in Tetraneuris Greene (AST). Phytologia 45:467. PARKE84 Parker, W. H., et al. 1984. Needle flavonoid variation in Abies balsamea and A. lasiocarpa from western Canada. Taxon 33:1-12. PATTE77 Patterson, R. 1977. A revision of Linanthus Sect. Siphonella (PLM). Madroño 24:36-48. PAVLI95 Pavlick, Leon. 1995. Bromus L. of North America. 160 pp. Roysal British Columbia Museum PAYNE64 Payne, W. W. 1964. Re-evaluation of Ambrosia. J. Arnold Arbor. 45:401-438. PAYSO22 Payson, E. B. 1922. A synoptical revision of the genus Cleomella. Univ. Wyo. Publ. Sci. 1:29-46. PEABO79 Peabody, F. J. 1979. Phlox longifolia Nutt. (PLM) complex of North America. Great Basin Nat. 39:1-14. PEARD83 Peard, J. L. 1983. Distribution of corticolous, noncrustose lichens on trunks of Rocky Mountain junipers in Boulder County, Colorado. Bryologist 86:244-250. PENLA58 Penland, C. W. T. 1958. Two new species of Penstemon in Colorado. Madroño 14:153-160. PENNE20 Pennell, F. W. 1920. Scrophulariaceae of the central Rocky Mountain states. Contrib. U. S. Nat. Herb. 20:313-381;vii- viii. PENNE28 Pennell, F. W. 1928-1929. Agalinis and allies in North America, I, II. Proc. Acad. Nat. Sci. Phila. 80:339-449; 81:111- 249. PENNE35 Pennell, F. W. 1935. Scrophulariaceae of east temperate North America. Phil. Acad. Nat. Sci. Monogr. 1:1-650. PERDU62 Perdue, Robert E. 1962. Two new varieties and a new combination in Rudbeckia. Rhodora 64:328-329. PHILL55 Phillips, L. L. 1955. Revision of perennial species of Lupinus. Res. Stud. State College Wash. 23:161-201. PILZ78 Pilz, G. E. 1978. Systematics of Mirabilis subgenus Quamoclidion (NYC). Madroño 25:113-132. PIPER13 Piper, C. V. 1913. Supplementary notes on American species of Festuca. Contrib. U.S, Nat. Herb. 16:197-199. PIPER96 Piper, C. V. 1906. North American species of Festuca. Contrib. U.S. Nat. Herb. 10:1-48. POELT54 Poelt, J. 1954. Gelappten Arten . . . Caloplaca in Europa. Mitt. Bot. Staatssamml. München 4:11-31. POELT55 Poelt, J. 1955. Die Gipfelvegetation und -flora des Wettersteingebirge. Fedde's Repert. 58:157-179. POELT58 Poelt, J. 1958. Die lobaten Arten der Flechtengattung Lecanora Ach. sens. ampl. in der Holarctis. Mitt. Bot. Staatssamml. München 19-20:411-589. POELT64 Poelt, J., & H. Ullrich. 1964. Einige chalkophile Lecanora-Arten. Österr. Bot. Zeits. 111:257-268. POELT65 Poelt, J. 1965. Einige Art-Gruppen ... Caloplaca und Fulgensia. Mitt. Bot. Staatssamml. München 5:571-607. POELT66 Poelt, J. 1966. Kenntnis ... Physconia. Nova Hedwigia 7:107-135. POELT69 Poelt, J. 1969. Bestimmungsschlüssel Europäischer Flechten. 757 pp. J. Cramer.

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POELT70 Poelt, J. 1970. Mitteilungen europäischer Flechten IX. Mitt. Bot. Staatssamml. München 8:101-210. POELT71 Poelt, J. 1971C. Über einige für Nordamerika neue Flechten. Bryologist 74:154-158. POELT74A Poelt, J., & A. Vezda. 1974. Sarcogyne similis, eine neue "nordamerikanische" Flechte in Griechenland. Ann. Mus. Goulandris 2:49-54. POELT74B Poelt, J. 1974. Die Erdflechte Buellia epigaea, eine Sammelart. Nova Hedwigia 25:173-191 [with a key to the species]. POELT76A Poelt, J., & J. Hafellner. 1976. Die Flechte Neonorrlinia trypetheliza und die Familie Arthrorhaphidaceae. Phyton (Austria) 17:213-220. POELT76B Poelt, J., & A. Vezda. 1976. Candelariella plumbea und C. rhodax sp. novae, zwei neue Arten der europaeischen Flechten-Flora. Folia Geobot. Phytotax. Praha 11:87-92. POELT77 Poelt, J., & A. Vezda. 1977. Bestimmungsschl. europ. Flechten. Ergänzungsheft I. 1-258. J. Cramer. POELT80 Poelt, J., & J. Hafellner. 1980. Apatoplaca--genus novum Teloschistacearum. Mitt. Bot. München 16:502-538. POELT81 Poelt, J., & A. Vezda. 1981. Bestimmungsschl. europ. Flechten. Ergänzungsheft II:1-390. J. Cramer. POELT83 Poelt, J. 1983. Bryonora, eine neue Gattung der Lecanoraceae. Nova Hedwigia 38:73-111. POELT92 Poelt, J., & W. Petutschnig. 1992. Contributions to the knowledge of the lichen flora of Himalayas IV. The genera Xanthoria and Teloschistes, with a revision of the Xanthoria candelaria-group. Nova Hedwigia 54:1-36. POELT93 Poelt, J., & T. H. Nash. 1993. Studies in the Umbilicaria vellea group (Umbilicariaceae) in North America. Bryologist 96:422-430. POHL69 Pohl, R. W. 1969. Muhlenbergia subg. Muhlenbergia in North America. Amer. Midl. Nat. 82:512-542. POLHI81 Polhill, R. M., & P. H. Raven [eds.]. 1981. Advances in legume systematics. 2 vols, 1,049 pp. Royal Bot. Gardens, Kew. POLJA61 Poljakov, R. 1961. [title?]. Trudy Inst. Bot. Akad. Nauk Kazakhstan SSR 11: 166-170. POPOV37 Popov, M. G. Papaver, in Flora USSR 7:607 (464 in English version). PORSI43 Porsild, A. E. 1943. Materials for a flora of continental Northwest Territories. Sargentia 4:1-79. PORSI54 Porsild, A. E. 1954. North American races of Saxifraga flagellaris. Sv. Bot. Tidskr. 51:292-299. PORSI55 Porsild, A. E. 1955. Vascular plants of the western Canadian Arctic Archipelago. Bot. Mus. Can. Bull. 135:1-193. PORSI80 Porsild, A. E., & W. J. Cody. 1980. Vascular plants of continental Northwest Territories, Canada. 667 pp. Nat. Mus. Canada. PORTE56 Porter, C. L. 1956. The genus Peteria (Leguminosae). Rhodora 58:344-354. PORTE69 Porter, D. M. 1969. The genus Kallstroemia (ZYG). Contrib. Gray Herb. 198:65-146. PORTE74 Porter, T. C., & J. M. Coulter. 1874. Synopsis of the flora of Colorado. U.S.G.S. Surv. Terr. Misc. Publ. 4:1-180. PORTE98 PORTE98 Porter, J. M. 1998. Aliciella, a recircumscribed grnus of Polemoniaceae. Aliso 17:23-46. POST58 Post, D. M. 1958. Studies in Gentianaceae I. Nodal anatomy of Frasera and Swertia perennis. Bot. Gaz. 120:1-14. POTEM99 Potemkin, A. D. 1999. An analysis of the practical taxonomy of some critical northern species of Scapania (Scapaniaceae, Hepaticae). Bryologist 102:32-38. POWEL73 Powell, A. M. 1973. Taxonomy of Pericome (Compositae-Peritylinae). Southwestern Nat. 18:335-339. PRICE80 Price, R. A. 1980. Draba streptobrachia (BRA), a new species from Colorado. Brittonia 32:160-169. PRICE85 Price, R. A., M. L. Rottman and E. Hartman. 1985. Noteworthy collections, Colorado. Madroño 32:191. PRICE91 Price, R. A., & R. C. Rollins. 1991. New taxa of Draba (BRA) from California, Nevada, and Colorado. Harvard Pap. Bot. 3:71-77. PRING71 Pringle, J. S. 1971. Taxonomy and distribution of Clematis, sect. Atragene in North America. Brittonia 23:361-393. PROSK62 Proskauer, J. 1962. Notes on Hepaticae, IV. Bryologist 65:213-233. PRYER93 Pryer, K. M., & C. H. Haufler. 1993. Isozymic and chromosomal evidence for the allotetraploid origin of [Gymnocarpium dryopteris (Dryopteridaceae). Syst. Bot. 18"150-172. RAMAL08A Ramaley, F. 1908. The botanical opportunity in Colorado. Univ. Colo. Studies 6:5-10.

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RAMAL08B Ramaley, F. 1908. Studies in mesa and foothill vegetation [parts by G. S. Dodds, W. W. Robbins]. Univ. Colo. Studies 6:11-49. pl. 1-2. RANDL92 Randlane, T., & A. Saag. 1992. New combinations of some Cetrarioid lichens (Parmeliaceae). Mycotaxon 44:491-493. RANDL97 Randlane, T., A. Saag, & A. Thell.1997. A second updated world list of Cetrarioid lichens. Bryologist 100:109-122. RANDL98 Randlane, T., & A. Saag. 1998. Changes in systematics of cetrarioid lichens. Sauteria 9:43-50. RAVEN60A Raven, P. H. 1960. The correct name for rescue grass. Brittonia 12:219-221. RAVEN60B Raven, P. H. 1960. Interspecific hybridization in Oenothera. Proc. Linn. Soc. Lond. 173:92-98. RAVEN64 Raven, P. H. 1964. The generic subdivision of Onagraceae. Brittonia 16:276-288. RAVEN69 Raven, P. H. 1969. Revision of Camissonia. Contrib. U. S. Nat. Herb. 37:161-396. RAVEN72 Raven, P. H. 1972. Revision of Gaura. Mem. Torr. Bot. Club 23:1-96. RAVEN73 Raven, P. H. 1973. Amphitropical relationships in the floras of North and South America. Quart. J. Biol. 38:151-177 [Myosurus on p. 172]. RAVEN76 Raven, P. H. 1977. Generic and sectional delimitation in Onagraceae, Sect. Epilobiae. Ann. Mo. Bot. Gard. 63:326- 340. RAYMO57 Raymond, M. 1957. The identity of Eriophorum humile. Contrib. Inst. Bot. Univ. Montreal 70:95-105. RECHI37 Rechinger, K. H., Jr. 1937. The North American species of Rumex. Field Mus., Bot. Ser. 17:1-151. REED64 Reed, C. F. 1964. Selaginella densa Rydb., an illegitimate name. Phytologia 9:497-500. REEDE51 Reeder, J. R. 1951. Setaria lutescens--an untenable name. Rhodora 53:27-30. REEDE59 Reeder, J. R., & M. A. Ellington. 1959. Calamovilfa, a misplaced genus of Gramineae. Brittonia 12:71-77. REEDE85 Reeder, C. G. 1985. The genus Lycurus in North America. Phytologia 57:283-291. REVEA65 Reveal, J. L. 1965. Notes on three Utah Eriogonums. Proc. Utah Acad. Sci. 42:287-292. REVEA67A Reveal, J. L. 1967. Notes on Eriogonum, V. Corymbosum group. Great Basin Nat. 27:183-229. REVEA68 Reveal, J. L. 1968. Notes on Eriogonum, IV. Brittonia 20:13-23. REVEA73 Reveal, J. L. 1973. A new suffruticose Eriogonum from western Colorado. Great Basin Nat. 33:120-122. REVEA76A Reveal, J. L., & J. T. Howell. 1976. Dedeckera, a new genus. Brittonia 28:245-251. REVEA76B Reveal, J. L. 1976. Eriogonum of Arizona and New Mexico. Phytologia 34:409-484. REVEA81 Reveal, J. L., & C. S. Keener. 1981. Virgulus Raf. (1837), an earlier name for Lasallea Greene (1903). Taxon 30:648- 651. ROBBI44 Robbins, G. T. 1944. North American species of Androsace. Amer. Midl. Nat. 32:137-163. ROBIN17 Robinson, B. L. 1917. A monograph of the genus Brickellia. Mem. Gray Herb. 1:1-151. ROBIN62 Robinson, H. 1962. Generic revisions of North American Brachytheciaceae. Bryologist 65:75-146. ROBIN70 Robinson, H. 1970. Revision of Trichostomopsis. Phytologist 20:184-191. ROBIN76 Robinson, H. 1976. Conardia, a new moss genus for Hypnum compactum (Hook.) C. Müller. Phytologia 33:293-295. ROGER68 Rogers, C. M. 1968. Yellow-flowered species of Linum in Central America and western North America. Brittonia 20:107-135. ROHRE85 Rohrer, J. R. 1985. A generic revision of the Hylocomiaceae. J. Hattori Bot. Lab. 59:2410278. ROLLI03B Rollina, R. C. 1993. The Cruciferae of Continental North America. 976 pp. Stanford. ROLLI37 Rollins, R. C. 1937. Two new species of Arctostaphylos from the Rocky Mountains. Rhodora 39:462-464. ROLLI39 Rollins, R. C. 1939. The cruciferous genus Stanleya. Lloydia 2:109-127. ROLLI40A Rollins, R. C. 1940A. Studies in the genus Hedysarum in North America. Rhodora 42:217-239. ROLLI40B Rollins, R. C. 1940B. On two weedy crucifers [Cardaria]. Rhodora 42:302-306. ROLLI41 Rollins, R. C. 1941. Monograph study of Arabis in western North America. Rhodora 43:289-325; 348-411; 425-481.

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ROLLI43 Rollins, R. C. 1943. Generic revisions in the Cruciferae: Halimolobos. Contrib. Dudley Herb. 3:241-288. ROLLI50 Rollins, R. C. 1950. The guayule rubber plant and its relatives. Contrib. Gray Herb. 172:1-72. ROLLI52 Rollins, R. C. 1952. The North American representatives of Smelowskia (Cruciferae). Rhodora 54:85-119. ROLLI53A Rollins, R. C. 1953. Braya in Colorado. Rhodora 55:109-116. ROLLI53B Rollins, R. C. 1953. Draba on Clay Butte, Wyoming. Rhodora 55:229-235. ROLLI73 Rollins, R. C., & E. A. Shaw. 1973. The genus Lesquerella in North America. 288 pp., 38 plates. Harvard Univ. Press. ROLLI79 Rollins, R. C. 1979. Dithyrea and a related genus (BRA). Bussey Inst., Harvard Univ. 3-32. ROLLI80 Rollins, R. C. 1980. The genus Pennellia in North America. Contrib. Gray Herb. 210:5-21. ROLLI81 Rollins, R. C. 1981. Studies in the genus Physaria (BRA). Brittonia 33:332-341. ROLLI82 Rollins, R. C. 1982. Thelypodiopsis and Schoenocrambe. Contrib. Gray Herb. 212:71-101. ROLLI83 Rollins, R. C. 1983. Studies in the Cruciferae of western North America. J. Arnold Arbor. 64:491-510. ROLLI93A Rollins, R. C. 1993. New taxa and names in the Cruciferae of California. Harvard Pap. Bot. 4:43-48. ROLLI93B Rollins, R. C. 1993. The Cruciferae of Continental North America. 976 pp. Stanford. ROLST82 Rolston, H. 1982. Bryum knowltonii new to the United States. Bryologist 85:420. ROOT87 Root, P. G. 1987. Botrychium pinnatum in Colorado. Amer. Fern J. 77:68-69. ROSAT87 Rosatti, T. J. 1987. Field and garden studies of Arctostaphylos uva-ursi (ERI) in North America. Syst. Bot. 12:61-77. ROSAT89 Rosatti, T. J. 1989. The genera of suborder Apocynineae (Apocynaceae and Asclepiadaceae) in the southeastern United State. J. Arn. Arb. 70:307-514 ROSEN66 Rosentreter, R., & B. McCune. 1996. Distribution and ecology of Teloschistes contortuplicatus in North America. Evansia 13:10-13, ROSEN92 Rosentreter, R., & B. McCune. 1002. Vagrant [Dermatocarpon] in western North America. Bryologist 95:15-19. ROSSB42 Rossbach, R. P. 1940. Spergularia in North and South America. Rhodora 42:57-83; 105-143; 158-193; 203-213. ROSSB58 Rossbach, G. B. 1958. The genus Erysimum. Madroño 14:261-167. ROTHM76 Rothmaler, W. 1976. Excursionsflora für die Gebiete der DDR und der BRD. p. 148 [Cerastium key]. ROTHR78 Rothrock, J. C. 1878. U.S.G.S. Survey (Wheeler). Vol. 6. Botany. 404 pp. 23 plates. RYAN89 Ryan, B. D. 1989. Lecanora sect. Petrasterion in North America: Lecanora weberi Ryan, sp. nov. (subsect. Pseudocorticatae) from Colorado. Mycotaxon 36:9-14. RYAN91 Ryan, B. D., & T. H. Nash III. 1991. Lecanora sect. Pertrasterion in North America: notes on the L. novomexicana complex (subsect. Pseudocorticatae). Mycotaxon 41:57-65. RYAN93 Ryan, B., & T. H. Nash. 1993. Lecanora, Sect. Placodium in north America: New taxa in the L. garovaglii group. Bryologist 96:288-298. RYAN97 Ryan, B. D., & T. H. Nash. 1997. Placodioid taxa of Lecanoraceae sensu Zahlbr. in North America: Taxa excluded from Lecanora subg. Placodium. Nova Hedwigia 64:393-420. RYDBE00 Rydberg, P. A. 1900. Catalogue of the flora of Montana and Yellowstone Park. Mem. N. Y. Bot. Gard. 1:1-492. RYDBE01A Rydberg, P. A. 1901. Studies on the Rocky Mountain Flora, IV. Bull. Torr. Bot. Club 28:20-38. RYDBE01B Rydberg, P. A. 1901. Studies on the Rocky Mountain Flora, V. Bull. Torr. Bot. Club 28:266-284. RYDBE01C Rydberg, P. A. 1901. Studies on the Rocky Mountain Flora, VI. Bull. Torr. Bot. Club 28:499-511. RYDBE04A Rydberg, P. A. 1904. Studies on the Rocky Mountain Flora, XI. Bull. Torr. Bot. Club 31:399-410. RYDBE04B Rydberg, P. A. 1904. Studies on the Rocky Mountain Flora, XII. Bull. Torr. Bot. Club 31:555-575. RYDBE05A Rydberg, P. A. 1905. Studies on the Rocky Mountain Flora, XIV. Bull. Torr. Bot. Club 32:123-138. RYDBE05B Rydberg, P. A. 1905. Studies on the Rocky Mountain Flora, XIII. Bull. Torr. Bot. Club 31:631-655. RYDBE05C Rydberg, P. A. 1905. Studies on the Rocky Mountain Flora, XV. Bull. Torr. Bot. Club 32:597-610. RYDBE06 Rydberg, P. A. 1906. Flora of Colorado. 447 pp. Colo. Agric. Exp. Sta. Bull. 100. (1905).

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RYDBE16 Rydberg, P. A, 1916. Anthemideae, in N. Amer. Flora 34(3):244. RYDBE19 Rydberg, P. A. 1919. (Rosales) Fabaceae: Psoraleae. N. Amer. Flora 24,I:1-75. RYDBE22 Rydberg, P. A. 1922. Flora of the Rocky Mountains and adjacent plains. Second edition (first ed. 1917). 1,143 pp. RYDBE23 Rydberg, P. A. 1923. Peteria, in N. Amer. Flora 24(3):183-184. RYDBE32 Rydberg, P. A. 1932. Portulacaceae, in N. Amer. Flora 21:279-336. RYDBE98 Rydberg, P. A. 1898. Monograph of Potentilleae. Mem. Dept. Bot. Columbia Univ. 2. 223 pp., 112 plates. SALME89 Salmenkallio, M., & I. Kukkonen. 1989. Proposal to conserve Trichophorum (CYP) with a conserved type. Taxon 38:313-316. SAMUT86 Samutina, M. 1986. Revisio specierum sectionis Botryosambucus Spach genus Sambucus L. (CPR). Novit. Syst. Plant. Vasc. 23:160-177. SANDE87 Sanders, R. W. 1987. Taxonomy of Agastache Sect. Brittonastrum. Syst. Bot. Monogr. 15:1092. SANTE84 Santesson, R. 1984. The lichens of Sweden and Norway. 333 pp. Swedish Museum of Nat. Hist. SANTE93 Santesson, R. 1993. The lichens and lichenicolous fungi of Sweden and Norway. 240 pp. SBT-forlaget, Lund. SARKA56 Sarkar, P. 1956. Crested wheatgrass complex. Can. J. Bot. 34:328-345. SARVE78 Sarvela, J. 1978. A synopsis of the fern genus Gymnocarpium. Ann. Bot. Fenn. 15:101-106. SAUER55 Sauer, J. 1955. Revision of the dioecious amaranths. Madroño 13:5-46. SAVIL79 Savile, D. B. O. 1979. Fungi as aids in higher plant classification. Bot. Review 45:377-503. SAYRE38 Sayre, G. 1938. The moss flora of Colorado. Unpublished Ph.D. Thesis, Univ. Colorado. SCHAA90 Schaack, C. G., & G. A. Goodwin. 1990 (Feb. 1991). A new subspecies of Cirsium parryi (AST) from Arizona, and comments on the Cirsium parryi complex. Madroño 37:299-304. SCHEI87 Scheidegger, C. 1987. Buellia uberior und B. miriquidica, zwei lichenicole Krustenflechten auf Schaereria tenebrosa. Bot. Helvet. 97:99-116. SCHEI93 Scheidegger, C. 1993. A revision of European saxicolous species of the genus Buellia de Not. and formerly included genera. Lichenologist 25:315-364. SCHIS59 Schischkin, B. K. [ed.]. 1959. Flora USSR, vol. 25. SCHISH36 Shishkin, B. K. 1936. Centrospermae, in Fl. USSR, vol. 6. SCHLE84 Schlessman, M. A. 1984. Systematics of tuberous Lomatiums (API). Syst. Bot. Monogr. 4:1-55. SCHNE79 Schneider, G. 1979. Die Flechtengattung Psora sensu Zahlbruckner. Bibl. Lich. 13:1-291. 84 figs. SCHUL24 Schulz, O. E. 1924. Cruciferae-Salsuginieae. Nat. Pflanzenfam. IV. 105:1-388. SCHUS53 Schuster, R. M. 1953. Boreal Hepaticae. A manual of the liverworts of Minnesota and adjacent regions. Amer. Midl. Nat. 49:257-684. SCHUS66 Schuster, R. M. 1966-1991. The Hepaticae and Anthocerotae of North America east of the hundredth Meridian. 6 vols. Columbia. SCHUS92 Schuster, R. M. 1992. The Hepaticae and Anthocerotae of North America. Vol. 6. 937 pp. Field Museum, Chicago. SCHUY66 Schuyler, A. 1966. [citation re Scirpus pendulus and lineatus] SCHUY74 Schuyler, A. E. 1974. Typification and application of the names Scirpus americanus Pers., S. olneyi) Gray, and S. pungens Vahl. Rhodora 76:51-52. SEAVE36 Seaver, F. J., & P. F. Shope. 1936. Some Rocky Mountain basidiomycetes. Univ. Colo. Studies 23:189-197. SEMPL81 Semple, J. C., & L. Brouillet. 1981. A synopsis of North American asters; the subgenera, sections, and subsections of Aster and Lasallea. Amer. J. Bot. 67:1010-1026. SEMPL87 Semple, J. C. 1987. New names, combinations, and lectotypifications in Heterotheca (AST). Brittonia 39:379-386. SEMPL89 Semple, J. C., J. G. Chmielewski, & M. Lane. 1989. Chromosome number determinations in fam. Compositae, tribe Astereae. III. Additional counts and comments on generic limits and ancestral base numbers. Rhodora 91:296-314. SEMPL90 Semple, J. C. 1990. Neotypification of Amellus villosus, the identity of a Bradbury collection, and typification of some other goldenasters (AST). Brittonia 42:221-228.

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SEMPL96 Semple, J. C. 1996. A revision of Heterotheca sect. Phyllotheca (Nutt.) Harms. Univ. Waterloo, Biol. Ser. 37:1-164. SHAN51 Shan, R. H., & L. Constance. 1951. The genus Sanicula (Umbelliferae) in the Old World and the new. Univ. Calif. Publ. Bot. 25:1-78.52 figs. SHARP35 Sharp, W. M. 1935. A critical study of certain epappose genera of the Heliantheae-Verbesininae of the natural family Compositae. Ann. Mo. Bot. Gard. 22:51-152. pl. 5, 6. SHARP94 Sharp, A.J., H. Crum, & P. Eckel. 1994. The Moss Flora of Mexico. Mem. N. Y. Bot. Gard. 69:1-1113. i-xvii. SHAW62 Shaw, R. J. 1962. Biosystematics of [Scrophularia] in western North America. Aliso 5:147-178. SHAW81A Shaw, A. J. 1981. Pohlia andrewsii and P. tundrae, two new Arctic-Alpine propaguliferous species from North America. Bryologist 84:65-74. SHAW81B Shaw, A. J. 1981. A taxonomic revision of the propaguliferous species of Pohlia in North America. J. Hattori Bot. Lab. 50:1-81. SHAW82A Shaw, A. J. 1982. Pohlia Hedw. (Musci) in North and Central America and the West Indies. Contrib. Univ. Mich. Herb. 15:219-295. SHAW82B Shaw, A. J. 1982. Taxonomic studies on Pohlia) subgenus Mniobryum, including P. brevinervis Lindb. & Arn., new for North America. Bryologist 84:505-514. SHAW94 Shaw, A. Jonathan, & Peter E. Rooks. 1994. Systematics of [Mielichhoferia I. Morphological and genetic analyses of M. elongata] and [M. mielichhoferiana]. Bryologist 97:1-12. SHEAR64 Sheard, J. W. 1964. The genus Buellia in the British Isles. Lichenologist 2:225-262. SHEAR74 Sheard, J. W. 1974. The genus Dimelaena in North America north of Mexico. Bryologist 77:128-141. SHEAR82 Sheard, J. W. 1982. The saxicolous species of the lichenized ascomycete genus Rinodina (Ach.) Gray with blue epithecia. Bryologist 85:88-95. SHEAR98A Sheard, J. W. 1998. Rinodina riparia, a new corticolous species from North America. Lichenographia Thomsoniana 37-40. SHEAR98B Sheard, J. W., & P. F. May. 1998. A synopsis of the species of Amandinea as presently known in North America. Bryologist 100:159-169. SHERF55 Sherff, E. E. 1955. Coreopsidinae, in N. Amer. Flora, II(2):1-149. SHEVI84 Sheviak, C. J. 1984. Spiranthes diluvialis (ORC), a new species from the western United States. Brittonia 36:8-12. SHEVI85 Sheviak, C. J. 1985. Spiranthes diluvialis, Clear Creek's new orchid. Green Thumb 42:14-17. SHINN47 Shinners, L. H. 1947. Revision of the genus Krigia Schreber. Wrightia 1:198-206. SHINN48 Shinners, L. H. 1948. The vetches and peavines of Texas. Field & Lab. 16:18-29. SHINN49 Shinners, L. H. 1949. Notes on Texas Compositae. Field & Lab. 17:23-30;53-64; 170-176. SHINW94 Shinwari, Z.K., R. Terauchi, F. H. Utech, & S. Kawano. 1994. Recognition of the New World Disporum section Prosartes as Prosartes (Liliaceae) based on the sequence data of the rbcL gene. Taxon 43:353-366. SHISH35 Shishkin, B. K. (editor). Flora of the USSR. Vol. 3. Cyperaceae (translation, 1964 SHIVA69 Shivas, M. G. 1969. A cytotaxonomic study of the Asplenium adiantum-nigrum complex. Brit. Fern Gaz. 10:68-80. SHUSH69 Shushan, S., & R. A. Anderson. 1969. Catalog of the lichens of Colorado. Bryologist 72:451-483. SIEMS90 Siems, B. A., & E. E. Neely. 1990. Braya glabella var. glabella (BRA) in Colorado. Madroño 37:146-147. SIERK64 Sierk, H. A. 1964. The genus Leptogium in North America north of Mexico. Bryologist 67:245-317. SIVIN94 Sivinski, R. C. 1994. A review of Cryptantha fulvocanescens (BOR) with the re-evaluation of Greene's Oreocarya nitida. Madrono 41:243-253. SJORS88 Sjörs, H. 1988. Vattenklövern, Menyanthes trifoliata--en minimonografi. Sv. Bot. Tidskr. 82:51-64. SKORE83 Skorepa, A. C. 1983. New combinations in the lichen genera Hypotrachyna and Parmelina (Parmeliaceae). Phytologia 53: 445-446. SMALL06 Small, J. K. 1906. Studies in North American Polygonaceae, II. Bull. Torr. Bot. Club 33:51-57. SMITH71 Smith, G. L. 1971. A conspectus of the genera of Polytrichaceae. Mem. N. Y. Bot. Gard. 31:1083. SOJAK72 Sojak, J. 1972. Nomenklatoricke Poznamky (Phanerogamae). Casopis Narod. Muz. Praha 140:(3-4):127-134.

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SOJAK74 Sojak, J. 1974. Bemerkungen zur Truellum. Preslia 46:139-156. SOJAK87 Sojak, J. 1987. Notes on Potentilla, V. Potentilla pensylvanica group in the Old World. Preslia, Praha 59:289-305. SOLBR60 Solbrig, O. 1960. Cytotaxonomic studies in Gutierrezia. Contrib. Gray Herb. 188:3-63. SOLTI91 Soltis, D. E. 1991. A revision of Sullivantia (SAX). Brittonia 43:27-53. SOLTI96 Soltis, D. E. et al. 1996. matK and rbcL gene sequence data indicate that Saxifraga (Saxifragaceae) is polyphyletic. Amer. J. Bot. 83:371-382. SOREN83 Soreng, Robert J., & S. L. Hatch. 1983. A comparison of Poa tracyi and Poa occidentalis. Sida 10:123-141. SOREN85 Soreng, R. J. 1985. Poa in New Mexico, with a key to Middle and Northern Rocky Mountain species (POA). Great Basin Nat. 45:395-422. SOREN91 Soreng, R. J. 1991. Systematics of the "Epiles" group of Poa. Syst. Bot. 16:507-528. SPELL75 Spellenberg, R. 1975. Synthetic hybridization and taxonomy of western North American Dichanthelium, group Lanuginosae. Madroño 23:134-153. SPENC87 Spence, J. R. 1986 [Feb. 1987]. Bryum calobryoides, a new species from western North America. Bryologist 89:215- 218. SPENC88 Spence, J. R. 1988. Bryum Hedw. (Bryaceae) in North America. Bryologist 91:73-85. SPENC96 Spence, J. R. 1996. Rosulabryum Genus Novum (Bryaceae). Bryologist 99:221-225. SPOTT39 Spotts, A. M. 1939. The violets of Colorado. Madroño 5:16-27. STAND09 Standley, P. C. 1909. The Allioniaceae of the United States, with notes on Mexican species. Contrib. U. S. Nat. Herb. 12:i-ix + 303-389. pl. 28-43. STAND16 Standley, P. C. 1916. Chenopodiaceae, in N. Amer. Flora 21(1):3-93. STAND30 Standley, P. C. 1930. Studies of American plants, III. Field Mus., Bot. Ser. 8:1-73. STAND85 Standley, L. A. 1985. Systematics of the Acutae group of Carex in the Pacific Northwest. Syst. Bot. Monogr. 7:1-106. STARK96 The status of Weissia sweetii, a species endemic to the southwestern United States. Bryologist 99:345-348. STEBB39 Stebbins, G. L. 1939. Notes on Lactuca. Madroño 5:123-126. STEBB49 Stebbins, G. L., & E. F. Paddock. 1949. The Solanum nigrum complex. Madroño 10:70-81. STEER74 Steere, W. C. 1974. The occurrence of Mnium spinosum in North America, II. Bryologist 77:79-82. STENR89 Stenroos, S. Taxonomy of the Cladonia coccifera group, I. Ann. Bot. Fenn. 26:157-168; II, l.c.:307-317. STEYE34 Steyermark,. J. A. 1934. A monograph of the North American species of the genus Grindelia. Ann. Mo. Bot. Gard. 21:433-608. STJOH62 St. John, H. 1962. Monograph of the genus Elodea). Part 1, The species found in the Great Pl;ains, the Rocky Mountains. . . . Res. Stud. Washington State Univ. 30:19-44, fig. 1-5. STJOH65 St. John, H. 1965. Revision of Elodea, IV. Rhodora 67:3-180. STOCK40 Stockwell, P. 1940. A revision of the genus Chaenactis. Contrib. Dudley Herb. 3:89-168. STOCK90 Stocker-Wörgötter, E., & R. Turk. 1990. Thallus formation of the cyanobacterial lichen Peltigera didactyla from soredia under laboratory conditions. Bot. Acta 103:315-321. STONE85 Stoneburner, A. 1985 [86]. Variation and taxonomy of Weissia in the United States, II. Taxonomic treatment. Bryologist 88:293-314. STRAW66 Straw, R. M. 1966. A redefinition of Penstemon. Brittonia 18:80-95. STROT78 Strother, J. L. 1978. Tetradymia, in N. Amer. Flora (2)10:163-170.1978. STROT86 Strother, J. L. 1896. Renovation of Dyssodia. Sida 11:371-378. STROT88 Strother, J. L., & W. J. Ferlatte. 1988. Review of Erigeron eatonii and allied taxa (Compositae: Astereae). Madroño 35:77-91. STUCK66 Stuckey, R. L. 1966. Distribution of Rorippa sylvestris. Sida 2:361-376. STUCK72 Stuckey, R. L. 1972. Taxonomy and distribution of Rorippa. Sida 4:279-430. STUES72 Stuessy, T. F. 1972. Revision of Melampodium. Rhodora 74:1-70, 161-219.

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STUTZ87 Stutz, H. C., et. al. 1987. Chromosome races of Grayia brandegei (CHN). Madroño 34:142-149. STUTZ90 Stutz, H. C., G.-L. Chu, & S. C. Sanderson. 1990. Evolutionary studies of Atriplex: phylogenetic relationships of Atriplex pleiantha. Amer. J. Bot. 77:364-369. STUTZ98 Stutz, H. C., & G.-L. Chu. 1977. Atriplex pachypoda (CHN), a new species from southwestern Colorado and Northwestern New Mexico. Madroño 44:277-281. SVENS39 Svenson, H. K. 1939. Monographic studies in Eleocharis. Rhodora 41:1-19, 43-79, 90-110. SVENS57 Svenson, H. K. 1957. Eleocharis, in N. Amer. Flora 18(9):508-540. SVENS87 Svensson, R., & M. Wigren. 1987. History and biology of Asperugo procumbens in Sweden. Sv. Bot. Tidskr. 81:321- 331. SVENS90 Svensson, R., & M. Wigren. Hundtungans historia och biologi i Sverige. Sv. Bot. Tidskr. 84:393-406. SWALL47 Swallen, J. R. 1947. The awnless annual species of Muhlenbergia. Contrib. U. S. Nat. Herb. 29:203-208. TATEO61 Tateoka, T. 1961. A biosystematic study of Tridens. Amer. J. Bot. 48:565-573. TAYLO65 Taylor, R. L. 1965. The genus Lithophragma. Univ. Calif. Publ. Bot. 37:1-89. TAYLO89 Taylor, P. 1989. The genus Utricularia, a taxonomic monograph. Kew Bull., Addit. Ser. 14:i-xi, 1-724. TERRE76 Terrell, E. E. 1976. The correct names for pearl millet and yellow foxtail. Taxon 25:297-304. THELL95 Thell, A. 1995. A new position of the Cetraria commixta group in Mlanelia (Ascomycotina, Parmeliaceae). Nova Hedw. 60:407-422. THELL98 Thell, A. 1998. Ohylogenetic relationships of some cetrarioid species in British Columbia with notes on Tuckermannopsis. Folia Cryptog. Estonica 32:113-122. THELL98A Thell, A., T. Randlane, I. Kaernefelt, X.-Q. Gao, & A. Saag. The lichen genus Allocetraria (Ascomycotina, Parmeliaceae). Flechten Follmann. Contributions to lichenology in honour of Gerhard Follmann. 353-370. 1995 THELL98B Thell, A. 1988. Phylogenetic relationships of some cetrarioid species in British Columbia with nots on Tuckermannopsis. Folia Cryptog. Estonica 32:13-122. THEOB64 Theobald, W. L., C. C. Tseng, & M. E. Mathias. 1964. A revision of Aletes and Neoparrya. Brittonia 16:296-315. THEOB66 Theobald, W. 1966. The Lomatium dasycarpum-mohavense-foeniculaceum complex. Brittonia 18:1-18. THOMP53 Thompson, H. J. 1953. Biosystematics of Dodecatheon. Contrib. Dudley Herb. 4:73-154. THOMP55 Thompson, H. J., & H. Lewis. 1955. Chromosome numbers in Mentzelia. Madroño 13:102-107. THOMP63 Thompson, H. J. 1963. Cytotaxonomic observations on Mentzelia, Sect. Bartonia (LOA). Madroño 17:16-29. THOMP86 Thompson, Henry J., & Barry Prigge. 1986. New species and a new combination of Mentzelia Sect. Bartonia (LOA) from the Colorado Plateau. Great Basin Nat. 46:549-554. THOMS50 Thomson, J. W. 1950. The species of Peltigera of North America north of Mexico. Bryolist 57:278-291. THOMS63A Thomson, J. W. 1963. The lichen genus Physcia in North America. Nova Hedwigia, Beih. 7:viii, 1-172. THOMS67A Thomson, J. W. 1967. The lichen genus Baeomyces] in North America north of Mexico. Bryologist 70:285-298. THOMS67B Thomson, J. W. 1967. Notes on Rhizocarpon in the Arctic. Nova Hedwigia 14:421-481. THOMS87 Thomson, J. W. 1987. The lichen genera Catapyrenium and Placidiopsis in North America. Bryologist 90:27-39. THOMS89 Thomson, J. W. 1989. Additions and a revised key to Catapyrenium in North America. Bryologist 92:190-193. THOMS92 Thomson, J. W. 1992. The lichen genus Staurothele in North America. Bryologist 94:351-367. THOR86 Thor, G., & E. Timdal. Aspicilia excavata: a new lichen species from Europe. Lichenologist 18:179-182. THORN78 Thorne, Robert F., & Ron Scogin. 1978. Forsellesia Greene (Glossopetalon Gray), a third genus in the Crossosomataceae, Rosinae, Rosales. Aliso 9:171-179. TIBEL75 Tibell, L. 1975. The Caliciales of Boreal North America. Symb. Bot. Upsal. 21(2):1-127. TIBEL81 Tibell, L. 1981. Comments on Caliciales Exsiccatae II. Lichenologist 13:51-64. TIEHM89 Tiehm, A. 1989. Vascular plants f1rst described in Rydberg's Flora of Colorado. Brittonia 41:152-155. TIMDA84A Timdal, E. 1984. The delimitation of Psora (Lecideaceae) and related genera, with notes on some species. Nordic J. Bot. 4:525-546.

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TIMDA84B Timdal, E. 1984. The genus Hypocenomyces, with special emphasis on the Norwegian and Swedish species. Nordic J. Bot. 4:83-108. TIMDA86 Timdal, E. 1986. Rhizocarpon santessonii, a new parasitic lichen from Norway. Lichenologist 18:317-320. TIMDA87 Timdal, E. 1986 [1987]. A revision of Psora in North America. Bryologist 89:253-275. TIMDA90 Timdal, E. 1990. Gypsoplacaceae and Gypsoplaca, a new family and genus of squamiform lichens. Bibl. Lichenol. 38:419-427. TIMDA91 Timdal, E. 1991. A monograph of the genus Toninia (Lecideaceae, Ascomycetes). Opera Bot. 110:1-137. TOLMA63 Tolmatchev, A. I., & B. A. Yurts'ev. 1963. De Ranunculo Grayi Britton (R. pedatifido Hook., non Smith) et distributione eius in Asia Boreali-Orientali notula. Bot. Mat. Herb. Bot. Inst. Acad. Sci. USSR 22:112-117. TOMB70 Tomb, A. S. 1970. Novelties in Lygodesmia and Stephanomeria. Sida 3:530-532. TOMB80 Tomb, A. S. 1980. Taxonomy of Lygodesmia (AST). Syst. Bot. Monogr. 1:1-51. TONSB90 Tonsberg, T. 1990. Japewia subaurifera, a new lichen genus and species from northwest Europe and western North America. Lichenologist 22:205-212. TORRE24 Torrey, J. 1824. Descriptions of some new or rare plants from the Rocky Mountains, collected in July, 1820. by Dr. Edwin James. Ann. Lyc. Nat. Hist. NY. 1:30-36. TORRE24A Torrey, J. 1824. Descriptions of some grasses collected by Dr. E. James. . . Ann. Lyc. Nat. Hist. N. Y. 1:148-156. TORRE26 Torrey, J. 1826. Some account of a collection of plants made during a journey to and from the Rocky Mountains in the summer of 1820, by Edwin P. James, M.D., Assistant Surgeon US Army. Ann. Lyc. Nat. Hist. N.Y. TORRE27 Torrey, J. 1827. Some account of a collection of plantds made during a journey to and from the Rocky Mountains in the summer of 1820, by Edwin P. James, Assistant Surgeon U.S. Army. Ann. Lyc. Nat. Hist. N.Y. 2:161-254. TORRE63 Torres, A. M. 1963. Taxonomy of Zinnia. Brittonia 15:1-25. TORRE99 Torrell, M., N. Garcia-Jacas, A. Susanna, and J. Valles. 1999. Phylogeny in Artemisia (Asteraceae, Anthemideae) inferred from nuclear ribosomal DNA (ITS sequences). Taxon 48:721-736. TOWNE70 Towner, H. F., & P. H. Raven. 1970. A new species and combinations in Calylophus. Madroño 20:241-245. TOWNE77 Towner, H. F. 1977. Biosystematics of Calylophus. Ann. Mo. Bot. Gard. 64:48-120. TRAUB67 Traub, H. P., & M. Ownbey. 1967. [title? concerning Allium]. Plant Life 23:110. TRENT90 Trent, J. S., & K. W. Allred. 1990. A taxonomic comparison of Aristida ternipes and Aristida hamlosa (POA). Sida 14:251-261. TRIEB88 Triebel, D., & G. Rambold. 1988. Cecidonia und Phacopsis (Lecanorales): zwei lichenicole Pilzgattungen mit cecidogenen Arten. Nova Hedw. 47:279-309. TRIEB91 Triebel, D., G. Rambold, & T. H. Nash III. On lichenicolous fungi from continental North America. Mycotaxon 42:263- 296. TRYON41 Tryon, R. M., Jr. 1941. Revision of the genus Pteridium, Rhodora 43:1-31;37-67. TRYON50 Tryon, R. M. 1950. A new erect species of the Selaginella rupestris group. Amer. Fern J. 40:69-74. TRYON55 Tryon, R. M. 1955. Selaginella rupestris and its allies. Ann. Mo. Bot. Gard. 42:1-99. TRYON57 Tryon, A. F. 1957. Revision of Pellaea, Sect. Pellaea. Ann. Mo. Bot. Gard. 44:125-193. TUOMI80 Tuomikoski, Risto, & Timo Koponen. 1980. On the generic taxonomy of Calliergon and Drepanocladus. Ann. Bot. Fenn. 16:213-227. TURNE56 Turner, B. L. 1956. Cytotaxonomic study of Hymenopappus. Rhodora 58:163-186, 208-242, 250-269, 295-308. TURNE76A Turner, B. L. 1976. Systematics of Palafoxia. Rhodora 78:567-628. TURNE76B Turner, B. L., & R. L. Hartman. 1976. Infraspecific categories of Machaeranthera pinnatifida. Wrightia 5:308-315. TURNE87 Turner, B. L. 1987. Taxonomic study of Machaeranthera, sections Machaeranthera and Hesperastrum (Asteraceae). Phytologia 62:207-266. TURNE90 Turner, B. L., & T. M. Barkley. 1990. Taxonomic overview of the ISenecio flaccidus complex in North America, including IS. douglasii. Phytologia 68:51-55. TUTIN64 Tutin, T. G., et al. 1964-1980. Flora Europaea. 5 volumes. Cambridge Univ. Press.

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TZVEL76 Tzvelev, N. N. 1976. Poaceae URSS. 778 pp. Leningrad. UMBER79 Umber, Ray E. 1979. The genus Glandularia (VRB) in North America. Syst. Bot. 4:72-102. VAINI34 Vainio, E. A. 1934. Lichenographia Fennica IV: Lecideales II. Acta Soc. Fl. Faun. Fenn. 57(2):531. Tab. 1-4. VAINI90 Vainio, Edw. 1890. Étude sur la classification nat. et la morphologie des lichens du Brésil. 2 vols. VANA99 Vana, Juri, and Won Shic Hong. 1999. The genus Jungermannia in western North America. Lindbergia 24:133-144. VANSK84 Vänska, Heino. 1984. The identity of the lichens Lecanora frustulosa and L. argopholis. Ann. Bot. Fenn. 21:391-402. VEZDA70 Vezda, A. 1970. Neue oder wenig bekannte Flechten in der Tschechoslowakei, I. Folia Geobot. Phytotax., Praha 5:307-337. VEZDA75 Vezda, A. 1975. Lichenes Selectae Exsiccatae, Fasc. LII (no. 1276-1300). Scheda. VEZDA77 Vezda, A. 1977. Flechtensystematische Studien X. Fol. Geobot. Phytotax., Praha 12:313-316. VEZDA78 Vezda, A. 1978. Neue oder wenig bekannte Flechten in der Tschechoslowakei, II. Folia Geobot. Phytotax., Praha 13:379-420. VEZDA90 Vezda, A. 1990. Bacidina] genus novum familiae Lecideaceae s. lat. Volia Geobot. Phytotax. 25:431-432. VINES60 Vines, R. A. 1960. Trees, Shrubs and Woody Vines of the Southwest. 1,104 pp. Univ. Texas Press. VITIK85 Vitikainen, O. 1985. Three new species of Peltigera. Ann. Bot. Fenn. 22:291-298. VITIK94 Vitikainen, O. 1994. Taxonomic revision of Peltigera in Europe. Acta Bot. Fenn. 152:1-96. VITT73 Vitt, D. H. 1973. A revision of the genus Orthotrichum in North America, north of Mexico. Bryophyt. Bibl. 1:1-208. 59 pl. VITT92 Vitt, D. H. 1992. The distribution of Nortth American bryophytes: Meesia uliginosa Hedw. Evansia 9:59-60. WADE65 Wade, A. E. 1965. Caloplaca in the British Isles. Lichenologist 3:1-28. WAGNE81 Wagner, W. L. 1981. Oenothera acutissima (ONA), a new species from northwestern Colorado and adjacent Utah. Syst. Bot. 6:153-158. WAGNE83A Wagner, W. L. 1983. New species and combinations in the genus Oenothera (ONA). Ann. Mo. Bot. Gard. 70:194- 196. WAGNE83B Wagner, W. H., Jr., & F. S. Wagner. 1983. Two moonworts of the Rocky Mountains: Botrychium hesperium and a new species formerly confused with it. Amer. Fern J. 73:53-62. WAGNE84 Wagner, W. L., & S. W. Mill. 1984. Oenothera kleinii (ONA), a new species from south-central Colorado. Syst. Bot. 9:50-52. WAGNE85 Wagner, W. L., R. E. Stockhouse, & W. M. Klein. 1985. Systematics and evolution of the Oenothera caespitosa species complex. Monogr. Syst. Bot. Mo. Bot. Gard. 12:1-103. WAGNE86 Wagner, W. H., Jr., & F. S. Wagner. 1986. Three new species of moonworts (Botrychium subg. Botrychium) endemic in western North America. Amer. Fern J. 76:33-47. WAGNE90 Wagner, W. H., Jr., & F. S. Wagner. 1990. Notes on the fan-leaflet group of moonworts in North America with descriptions of two new members. Amer. Fern J. 80:73-81. WAGNE94 Wagner, W. H. Jr., & F. S. Wagner. 1994. Another widely disjunct, rare and local North American Moonwort [Botrychium lineare]. Amer. Fern J. 84:5-10. WAGNO52 Wagnon, H. K. 1952. A revision of the genus Bromus, Section Bromopsis, of North America. Brittonia 7:415-480. WALKE64 Walker, S., & A. C. Jermy. 1964. Dryopteris assimilis S. Walker in Britain. Brit. Fern Gaz. 9:137-140. WALLA05 Wallace, A. R. 1905. My life; a record of events and opinions. 2 vols. 899 pp. Dodd, Mead. WALLA79 Wallace, G. A. 1979. An overlooked new species of Smilax from northern California. Brittonia 31:416-421. [includes key to western herbaceous species] WARD53 Ward, G. H. 1953. Artemisia, section Seriphidium, in North America, a cytotaxonomic study. Contrib. Dudley Herb. 4:155-205. WARNC68 Warncke, E. 1968. Marchantia alpestris in Denmark. Bot. Tidsskr. 63:358-368. WARNO81 Warnock, M. J. 1981. Biosystematics of the Delphinium carolinianum complex. Syst. Bot. 6:38-54.

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WARNO89 Warnock, M. J. 1989. Clarifications and lectotypifications of some North American Delphinium. Phytologia 67:468- 493. WATER58 Waterfall, U. T. 1958. Taxonomic study of Physalis. Rhodora 60:108-114, 128-142, 152-173. WATSO77 Watson, T. J. 1977. Taxonomy of Xylorhiza. Brittonia 29:199-216. WEBBE53 Webber, J. M. 1953. Yuccas of the Southwest. U.S.D.A. Agric. Monogr. 17:1-97. WEBER46 Weber, W. A. 1946. A taxonomic and cytological study of the genus Wyethia, family Compositae, with notes on the related genus Balsamorhiza. Amer. Midl. Nat. 35:400-452. WEBER50A Weber, W. A. 1950. Recent additions to the flora of Colorado. Univ. Colorado Stud., Ser. Biol. 1:46-50. WEBER50B. Weber, W. A. 1950. A new species and subgenus of Atriplex from Colorado. Madroño 10:187-191. WEBER52A Weber, W. A. 1952. Phippsia algida in the United States. Rhodora 54:141-145. WEBER52B Weber, W. A. 1952. Moss flora of Colorado; additions in Aulacomnium. Bryologist 55:297. WEBER52C Weber, W. A. 1952. The genus Helianthella. Amer. Midl. Nat. 48:1-35. WEBER55 Weber, W. A. 1955. Additions to the flora of Colorado, II. Univ. Colorado Stud., Ser. Biol. 3:65-114. WEBER58 Weber, W. A. 1958. Rediscovery of Neoparrya. Rhodora 60:265-271. WEBER59 Weber, W. A. 1959. Some features of the distribution of arctic relicts at their austral limits. Proc. IX Internat. Bot. Congr. 2:425-426. WEBER61A Weber, W. A. 1961. Additions to the flora of Colorado, III. Univ. Colorado Stud. Ser. Biol. 7:1-26. WEBER61B Weber, W. A. 1961. Studies of Colorado bryophytes. Univ. Colorado Stud. Ser. Biol. 7:27-52. WEBER61C Weber, W. A. 1961. A second American record for Oreas martiana. Bryologist 63:241-244. WEBER62 Weber, W. A. 1962. Environmental modification and the taxonomy of the crustose lichens. Sv. Bot. Tidskr. 56:293- 333. WEBER63 Weber, W. A. 1963. Additions to the bryophyte flora of Colorado. Bryologist 66:192-200. WEBER66 Weber, W. A. 1966. Additions to the Colorado flora, IV. Univ. Colorado Stud. Ser. Biol. 23:1-24. WEBER67 Weber, W. A. 1967. Rocky Mountain Flora, 3rd edition. Colorado Assoc. Univ. Press. WEBER67B Weber, W. A. 1967. A synopsis of the North American species of Cyphelium). Bryologist 70:197-203. WEBER68 Weber, W. A. 1968. A taxonomic revision of Acarospora, subgenus Xanthothallia. Lichenologist 4:16-31. WEBER71A Weber, W. A., & D. D. Awasthi. 1971. New species of Heterodermia. Bryologist 74:181-183. WEBER71B Weber, W. A. 1971. New species of Aspicilia. Bryologist 74:183-185. WEBER72 Weber, W. A. 1972. Rocky Mountain Flora, 4th edition. Colorado Assoc. Univ. Press. WEBER73A Weber, W. A. 1973. Additions to the Colorado Flora, V. Southwestern Nat. 18:317-329. WEBER73B Weber, W. A. 1973. Guide to the mosses of Colorado. Inst. Arctic Alpine Res. Occ. Pap. 6:1-48. WEBER75 Weber, W. A. 1975. Two new species of Lecanora. Bryologist 78:206-210. WEBER76A Weber, W. A. 1976. New combinations in the Rocky Mountain flora. Phytologia 33:105-106. WEBER76B Weber, W. A. 1976. Rocky Mountain Flora. 5th edition. Colorado Assoc. Univ. Press. WEBER79A Weber, W. A., B. C. Johnston, & D. Wilken. 1979. Additions to the flora of Colorado, VI. Phytologia 41:486-500. WEBER79B Weber, W. A., & R. Hartman. 1979. Pseudostellaria jamesiana, comb. nov., a North American representative of a Eurasian genus. Phytologia 44:313-314. WEBER81A Weber, W. A., B. C. Johnston & R. Wittmann. 1981. Additions to the flora of Colorado, VII. Brittonia 33:325-331. WEBER81B Weber, W. A., & A. Löve. 1981. New combinations in the genus Packera (AST). Phytologia 49:44-50. WEBER81C Weber, W. A. 1981. Lichenes Exsiccati distributed by the University of Colorado Museum, Boulder. Fascicles 1-15, Nos. 1-600, 1961-1979. Mycotaxon 13:85-104. WEBER82A Weber, W. A., & R. Wittmann. 1982. Additions to the flora of Colorado, VIII. Phytologia 51:376-380. WEBER82B Weber, W. A. 1982. New names and combinations, principally in the Rocky Mountain flora, II. Phytologia 51:369-376.

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WEBER83A Weber, W. A. 1983. New names and combinations, principally in the Rocky Mountain flora, III. Phytologia 53:187-190. WEBER83B Weber, W. A., & R. Wittmann. 1983. Additions to the flora of Colorado, IX. Phytologia 53:191-193. WEBER84A Weber, W. A. 1984. Lichenes exsiccati, distributed by the University of Colorado Museum, Fasc. 16, No. 601-640. WEBER84B Weber, W. A. 1984. New names and combinations, principally in the Rocky Mountain flora, IV. Phytologia 55:1-11. WEBER84C Weber, W. A., & R. Wittmann. 1984. Additions to the flora of Colorado, X. Phytologia 55:11-13. WEBER85A Weber, W. A., & R. Wittmann. 1985. Additions to the flora of Colorado, XI. Phytologia 58:385-388. WEBER85B Weber, W. A. 1985. New names and combinations, principally in the Rocky Mountain flora, V. Phytologia 58:382-384. WEBER86A Weber, W. A., & G. Argus. 1986. Salix lanata ssp. calcicola in Colorado. Madroño 33:148-149. WEBER86B Weber, W. A. 1986. Penstemon penlandii, sp. nov., from Colorado. Phytologia 60:459-461. WEBER87A Weber, W. A. 1987A. New names and combinations, principally in the Rocky Mountain Flora, VI. Phytologia 62:437- 438. WEBER87B Weber, W. A. 1987B. Colorado Flora: Western Slope. Colorado Assoc. Univ. Press. WEBER87C Weber, W. A. 1987. Noteworthy collections, Colorado. Bryum blindii BSG. Madroño 29:246. WEBER89A Lichenes Exsiccati distributed by the University of Colorado Museum, Fasc. 17-18, Nos. 641-700. WEBER89B Weber, W. A. 1989. New names and combinations, principally in the Rocky Mountain flora, VII. Phytologia 67:425- 428. WEBER89C Weber, W. A. 1989. Additions to the flora of Colorado, XII. Phytologia 67:429-437. WEBER90 Weber, W. A. 1990. Additions to the lichen flora of Colorado and North America. Evansia 7:17-25. WEBER91A Weber, W. A. 1991A. New names and combinations, principally in the Rocky Mountain Flora, VIII. Phytologia 70:231- 233. WEBER95 Weber, W. A. 1995. New names and combinations, principally in the Rocky Mountain Flora, IX. Phytologia 79:65-67. WEBER99 Weber, W. A. 1999. New names and combinations in Asteraceae: Hekliantheae-Ecliptinae. Phytologia 85:19-21. 1998 [published November 1999]. WEBST63 Webster, G. L., & K. Miller. 1963. The genus Raverchonia (Euphorbiaceae). Rhodora 65:195-207. WEI93 Wei, Jiang-chun. 1993. The lectotypification of sopme species in the Umbilicariaceae described by Linnaeus or Hoffmann. Mycosystema 5 (Suppl.):1-17. WEIMA63 Weimarck, H. 1963. Skånes Flora. 720 pp. Bokförlaget Corona, Lund. WEIMA71 Weimarck, G. 1971. Variation and taxonomy of Hierochloë. Bot. Not. 124:129-175. WELCH60 Welch, W. H. 1960. A monograph of the Fontinalaceae. 357 pp. Martinus Nijhoff. WELLS68 Wells, P. V. 1968. New taxa in Arctostaphylos. Madroño 19:193-210. WELLS89 Wells, P. V. 1989. New combinations in Arctostaphylos (ERI): annotated list of changes in status. Madroño 35:330- 341. 1988 [March 1989]. WELSH65 Welsh, S. L. 1965. Legumes of Utah III: Lathyrus L. Proc. Utah Acad. Sci. 42:214-221. WELSH75 Welsh, S., N. D. Atwood, & J. L. Reveal. 1975. Endangered . . . Utah . . . plants. Great Basin Nat. 35:327-376. WELSH78 Welsh, S. L. 1978. Endangered and threatened plants of Utah: a reevaluation [Mentzelia argillosa]. Great Basin Nat. 38:1-18. WELSH80 Welsh, S. L., & S. Goodrich. 1980. Miscellaneous plant novelties from Alaska, Nevada and Utah. Great Basin Nat. 40:78-88. WELSH82 Welsh, S., & B. C. Johnston. 1982. Utah Flora: Rosaceae. Great Basin Nat. 25:1-44. 1982. WELSH85 Welsh, Stanley L. 1985. New species of Astragalus (FAB) from Mesa County, Colorado [A. debequaeus]. Great Basin Nat. 45:31-33. WELSH86A New Taxa and combinations in the Utah flora. Great Basin Nat. 46:254-260. WELSH86B Welsh, S. L. 1986. New taxa in miscellaneous families from Utah. Great Basin Nat. 46:261-264. WELSH87 Welsh, S. L., N. D. Atwood, S. Goodrich, & L. C. Higgins. 1987. A Utah Flora. Great Basin Nat. Memoirs 9:1-894.

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WESTB98 Westberg, M. & I. Kaernefelt. 1998. The genus Fulgensia A. Massal. & DeNot., a diverse group in the Teloschistaceae. Lichenologist 30:515-532. WETMO60 Wetmore, C. M. 1960. The lichen genus Nephroma in North and Middle America. Publ. Mus. Mich. State Univ. Biol. Ser. 1:369-452. WETMO68 Wetmore, C. M. 1968. Lichens of the Black Hills. Mich. State Univ. Biol. Ser. 3:209-464. WETMO70 Wetmore, C. M. 1970. The lichen family Heppiaceae in North America. Ann. Mo. Bot. Gard. 57:158-209. WETMO94 Wetmore, C. M. 1994. The lichen genus Caloplaca in North and Central America with brown or black apothecia. Mycologia 86:813-838. WETMO95 Wetmore, C. WETMO96 Wetmore, C. M. 1996. The Caloplaca sideritis group in North and Central America. Bryologist 99:292-314. WETMO98 The lobate and subfruticose species of Caloplaca in North and Central America. Bryologist 101:230-255. WHALE87 Whalen, M. A. 1987. Systematics of Frankenia in North and South America. Syst. Bot. Monogr. 17:1-93. WHEEL41 Wheeler, L. C. 1941. Euphorbia subgenus Chamaesyce in Canada and the United States exclusive of southern Florida. Rhodora 43:97-154; 168-205; 223-286. WHERR38 Wherry, E. T. 1938. Colorado Ferns. Amer. Fern J. 28:125-240. WHERR55 Wherry, E. T. 1955. The genus Phlox. Morris Arbor. Monogr. 3:1-174. WHERR61 Wherry, E. T. 1961. Remarks on the Ipomopsis aggregata group. Aliso 5:5-8. WIDEN71 Widén, K. G. 1971. The genus Agrostis in eastern Fennoscandia. Taxonomy and distribution. Flora Fenn. 5:1-209. WIENS62 Wiens, D., & D. Halleck. 1962. Chromosome numbers in Rocky Mountain plants, I. Bot. Not. 115:455-464. WIGGI36 Wiggins, I. L. 1936. A resurrection and revision of the genus Iliamna Greene. Contrib. Dudley Herb. 1:213-236. WILBU75 Wilbur, R. L. 1975. A revision of the North American genus Amorpha(Leguminosae-Psoraleae). Rhodora 77:337-409. WILKE78 Wilken, D., W. Harmon, C. Feddema, & H. Harrington. 1978. Distributional records for the Colorado flora. Great Basin Nat. 38:208-210. WILKE83 Wilken, D. H., & K. DeMott. 1983. A new species of Thalictrum (RAN) from western Colorado. Brittonia 35:156-158. WILKE84 Wilken, D., & J. S. Peterson. 1984. Distributional records for the Colorado flora, II. Great Basin Nat. 44:516-517. WILKE91 Wilken, D., & R. L. Hartman. 1991. A revision of the Ipomopsis spicata complex (PLM). Syst. Bot. 16:143-161. WILLI37 Williams, L. O. 1937. A monograph of the genus Mertensia in North America. Ann. Mo. Bot. Gard. 24:17-159. WILSO63 Wilson, F. D. 1963. Revision of Sitanion. Brittonia 15:303-323. WILSO81 Wilson, K. L. 1981. A synopsis of the genus Scirpus, sens. lat. in Australia. Telopea 2:153-172. WILSO89 Wilson, P., & D. H. Norris. 1989. Pseudoleskeella in North America and Europe. Bryologist 92:387-396. WINDH87 Windham, M. D. 1987. Argyrochosma, a new genus of Cheilanthoid ferns. Amer. Fern J. 77:37-41. WINDL93 Windham, M. D, 1993. New taxa and nomenclatural changes in the North American fern flora. Contrib. U. Mich. Herb. 19:31-61. WINGA85 Wingate, Janet L. 1985. Denver grasses: a key to the common genera. Green Thumb 42:25-32. WIPFF94 Wipff, J. K., & S. D. Jones. 1994. Melica subulata: the first report for Colorado. Sida 16:210.1994. WIRTH87 Wirth, V. 1987. Die Flechten Baden-Württembergs. 528 pp. E. Ulmer, Stuttgart. WOLF08 Wolf, T. 1908. Monographie der Gattung Potentilla. Bibl. Bot. 16(71):1-714. WOODL82 Woodland, Dennis W. 1982. Biosystematics of the perennial North American species of Urtica. II. Taxonomy. Syst. Bot. 7:282-290. WOODR76 Woodruff, Dorothea, & Lyman Benson. 1976. Changes of status in Sclerocactus. Cact. Succ. J. 48:131-134. WOODS28 Woodson, R. E. 1928. A monograph of the genus Amsonia. Ann. Mo. Bot. Gard. 15:379-434. WOODS30 Woodson, R. E. 1930. A critical study of the Apocynoideae (with special reference to the genus Apocynum). Ann. Mo. Bot. Gard. 17:1-112. WOODS54 Woodson, R. E. 1954. North American species of Asclepias. Ann. Mo. Bot. Gard. 41:1-211.

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WUNDE74 Wunder, H. 1974. Schwarzfrüchtige, saxicole Sippen der Gattung Caloplaca, in Mitteleuropa, dem Mittelmeergebiet und Vorderasien. Bibl. Lich. 3:1-186.9 plates. YUNCK32 Yuncker, T. G. 1932. The genus Cuscuta. Mem. Torr. Bot. Club 18:111-331. ZAHLB22 Zahlbruckner, A. 1922-1940. Catalogus lichenum universalis. 10 volumes. Borntraeger. ZANDE77 Zander, R. H. 1977. The tribe Pleuroweisieae (Pottiaceae) in Middle America. Bryologist 80:233-269. ZANDE78A Zander, R. H. 1978. New combinations in Didymodon and a key to the taxa in North America north of Mexico. Phytologia 41:11-32. ZANDE78B Zander, R. H. 1978. A synopsis of Bryoerythrophyllum and Morinia in the New World. Bryologist 81:539-560. ZANDE79 Zander, R. H. 1979. Notes on Barbula and Pseudocrossidium in North America and an annotated key to the taxa. Phytologia 44:177-214. ZANDE81 Zander, R. H. 1981. Didymodon (Pottiaceae) in Mexico and California: taxonomy and nomenclature of discontinuous and nondiscontinuous taxa. Crypt. Bryol. Lichenol. 2:379-422. ZANDE85 Zander, R. H. 1985. Nomenclatural transfers in Weissia. Monog. Syst. Bot. Mo. Bot. Gard. 11:195-197. ZANDE89 Zander, R. H. 1989. Seven new genera in Pottiaceae (Musci) and a lectotype for Syntrichia. Phytologia 65:424-436. ZANDE95 Zander, R. H. Zander, L. R. Stark, & G. Marrs-Smith. 1995. Didymodon nevadensis, a new species for North America, with comments on phenology. Bryologist 98:590-595. ZIMME94 Zimmer, B., & W. Greuter. 1994. (1093) Proposal to reject the name Asplenium ramosum L. (Pteridophyta). Taxon 43:303-304. ZOHAR84 Zohary, Michael, & David Heller. 1984. The genus Trifolium. 606 pp. Israel Academy Arts, Sci., Human.

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